56577287256 has 64 divisors (see below), whose sum is σ = 161708935680. Its totient is φ = 16158984960.

The previous prime is 56577287233. The next prime is 56577287267. The reversal of 56577287256 is 65278277565.

It is a self number, because there is not a number n which added to its sum of digits gives 56577287256.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 405901 + ... + 527171.

It is an arithmetic number, because the mean of its divisors is an integer number (2526702120).

Almost surely, 2^56577287256 is an apocalyptic number.

56577287256 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

56577287256 is an abundant number, since it is smaller than the sum of its proper divisors (105131648424).

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

56577287256 is a wasteful number, since it uses less digits than its factorization.

56577287256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124064 (or 124060 counting only the distinct ones).

The product of its digits is 49392000, while the sum is 60.

The spelling of 56577287256 in words is "fifty-six billion, five hundred seventy-seven million, two hundred eighty-seven thousand, two hundred fifty-six".