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55023805395 = 325131723210459
BaseRepresentation
bin110011001111101011…
…001010001111010011
312021000200222221001100
4303033223022033103
51400142043233040
641135543035443
73655353425466
oct631753121723
9167020887040
1055023805395
112137655a439
12a7b743bb83
13525b814b40
14293da2b2dd
15167094eb30
hexccfaca3d3

55023805395 has 144 divisors (see below), whose sum is σ = 113697773280. Its totient is φ = 24384374784.

The previous prime is 55023805393. The next prime is 55023805399. The reversal of 55023805395 is 59350832055.

55023805395 is a `hidden beast` number, since 5 + 502 + 3 + 8 + 0 + 53 + 95 = 666.

It is not a de Polignac number, because 55023805395 - 21 = 55023805393 is a prime.

It is a super-2 number, since 2×550238053952 (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 55023805395.

It is not an unprimeable number, because it can be changed into a prime (55023805393) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 5255676 + ... + 5266134.

It is an arithmetic number, because the mean of its divisors is an integer number (789567870).

Almost surely, 255023805395 is an apocalyptic number.

55023805395 is an abundant number, since it is smaller than the sum of its proper divisors (58673967885).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55023805395 is a wasteful number, since it uses less digits than its factorization.

55023805395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10546 (or 10520 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 45.

The spelling of 55023805395 in words is "fifty-five billion, twenty-three million, eight hundred five thousand, three hundred ninety-five".

Divisors: 1 3 5 9 13 15 17 23 39 45 51 65 69 85 115 117 153 195 207 221 255 299 345 391 529 585 663 765 897 1035 1105 1173 1495 1587 1955 1989 2645 2691 3315 3519 4485 4761 5083 5865 6877 7935 8993 9945 10459 13455 15249 17595 20631 23805 25415 26979 31377 34385 44965 45747 52295 61893 76245 80937 94131 103155 116909 134895 135967 156885 177803 228735 240557 309465 350727 404685 407901 470655 533409 584545 679835 721671 889015 1052181 1202785 1223703 1600227 1753635 2039505 2165013 2311439 2667045 3127241 3608355 4089469 5260905 5532811 6118515 6934317 8001135 9381723 10825065 11557195 12268407 15636205 16598433 20447345 20802951 27664055 28145169 34671585 36805221 46908615 49795299 53163097 61342035 71926543 82992165 94057787 104014755 140725845 159489291 184026105 215779629 248976495 265815485 282173361 359632715 470288935 478467873 647338887 797446455 846520083 1078898145 1222751231 1410866805 2392339365 3236694435 3668253693 4232600415 6113756155 11004761079 18341268465 55023805395