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51001050056 = 23111734091611
BaseRepresentation
bin101111011111111001…
…100100001111001000
311212122100110210010212
4233133321210033020
51313422232100211
635232441300252
73453565526015
oct573771441710
9155570423125
1051001050056
111a6a1843850
129a74194688
134a6a286b38
14267b67270c
1514d76d238b
hexbdfe643c8

51001050056 has 32 divisors (see below), whose sum is σ = 110456822880. Its totient is φ = 21818630400.

The previous prime is 51001050041. The next prime is 51001050167. The reversal of 51001050056 is 65005010015.

It is a super-2 number, since 2×510010500562 (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17044310 + ... + 17047301.

It is an arithmetic number, because the mean of its divisors is an integer number (3451775715).

Almost surely, 251001050056 is an apocalyptic number.

It is an amenable number.

51001050056 is an abundant number, since it is smaller than the sum of its proper divisors (59455772824).

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

51001050056 is a wasteful number, since it uses less digits than its factorization.

51001050056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34091645 (or 34091641 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 23.

The spelling of 51001050056 in words is "fifty-one billion, one million, fifty thousand, fifty-six".

Divisors: 1 2 4 8 11 17 22 34 44 68 88 136 187 374 748 1496 34091611 68183222 136366444 272732888 375007721 579557387 750015442 1159114774 1500030884 2318229548 3000061768 4636459096 6375131257 12750262514 25500525028 51001050056