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55031251230 = 2335307663907
BaseRepresentation
bin110011010000000111…
…100100000100011110
312021001020000012211000
4303100013210010132
51400201000014410
641140410411130
73655503626454
oct632007440436
9167036005730
1055031251230
112137a78561a
12a7b9a30aa6
135260220c67
142940a089d4
151671420dc0
hexcd01e411e

55031251230 has 64 divisors (see below), whose sum is σ = 147228238080. Its totient is φ = 14627176992.

The previous prime is 55031251201. The next prime is 55031251273. The reversal of 55031251230 is 3215213055.

It is a happy number.

55031251230 is a `hidden beast` number, since 5 + 503 + 125 + 1 + 2 + 30 = 666.

It is a super-2 number, since 2×550312512302 (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 55031251194 and 55031251203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 249064 + ... + 414843.

It is an arithmetic number, because the mean of its divisors is an integer number (2300441220).

Almost surely, 255031251230 is an apocalyptic number.

55031251230 is an abundant number, since it is smaller than the sum of its proper divisors (92196986850).

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

55031251230 is a wasteful number, since it uses less digits than its factorization.

55031251230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664230 (or 664224 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

Adding to 55031251230 its reverse (3215213055), we get a palindrome (58246464285).

The spelling of 55031251230 in words is "fifty-five billion, thirty-one million, two hundred fifty-one thousand, two hundred thirty".

Divisors: 1 2 3 5 6 9 10 15 18 27 30 45 54 90 135 270 307 614 921 1535 1842 2763 3070 4605 5526 8289 9210 13815 16578 27630 41445 82890 663907 1327814 1991721 3319535 3983442 5975163 6639070 9958605 11950326 17925489 19917210 29875815 35850978 59751630 89627445 179254890 203819449 407638898 611458347 1019097245 1222916694 1834375041 2038194490 3057291735 3668750082 5503125123 6114583470 9171875205 11006250246 18343750410 27515625615 55031251230