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51175000485 = 3257269133587
BaseRepresentation
bin101111101010010001…
…001000100110100101
311220002110210101021100
4233222101020212211
51314301300003420
635302013510313
73461110220100
oct575221104645
9156073711240
1051175000485
111a780a54334
129b024a2399
134a9732029b
1426967d3737
1514e7ae3190
hexbea4489a5

51175000485 has 72 divisors (see below), whose sum is σ = 103337915616. Its totient is φ = 23359734720.

The previous prime is 51175000447. The next prime is 51175000489. The reversal of 51175000485 is 58400057115.

51175000485 is a `hidden beast` number, since 5 + 1 + 175 + 0 + 0 + 0 + 485 = 666.

It is not a de Polignac number, because 51175000485 - 216 = 51174934949 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51175000489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1506862 + ... + 1540448.

It is an arithmetic number, because the mean of its divisors is an integer number (1435248828).

Almost surely, 251175000485 is an apocalyptic number.

It is an amenable number.

51175000485 is an abundant number, since it is smaller than the sum of its proper divisors (52162915131).

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

51175000485 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (51175000484) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (34303).

51175000485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34303 (or 34293 counting only the distinct ones).

The product of its (nonzero) digits is 28000, while the sum is 36.

The spelling of 51175000485 in words is "fifty-one billion, one hundred seventy-five million, four hundred eighty-five", and thus it is an aban number.

Divisors: 1 3 5 7 9 15 21 35 45 49 63 105 147 245 315 441 691 735 2073 2205 3455 4837 6219 10365 14511 24185 31095 33587 33859 43533 72555 100761 101577 167935 169295 217665 235109 302283 304731 503805 507885 705327 1175545 1511415 1523655 1645763 2115981 3526635 4937289 8228815 10579905 14811867 23208617 24686445 69625851 74059335 116043085 162460319 208877553 348129255 487380957 812301595 1044387765 1137222233 1462142871 2436904785 3411666699 5686111165 7310714355 10235000097 17058333495 51175000485