56557122528 has 48 divisors (see below), whose sum is σ = 148490737920. Its totient is φ = 18848781696.

The previous prime is 56557122511. The next prime is 56557122541. The reversal of 56557122528 is 82522175565.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×56557122528² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

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, 476451 + ... + 583197.

It is an arithmetic number, because the mean of its divisors is an integer number (3093557040).

Almost surely, 2^56557122528 is an apocalyptic number.

It is an amenable number.

56557122528 is an abundant number, since it is smaller than the sum of its proper divisors (91933615392).

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

56557122528 is a wasteful number, since it uses less digits than its factorization.

56557122528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112279 (or 112271 counting only the distinct ones).

The product of its digits is 1680000, while the sum is 48.

The spelling of 56557122528 in words is "fifty-six billion, five hundred fifty-seven million, one hundred twenty-two thousand, five hundred twenty-eight".