56577880 has 32 divisors (see below), whose sum is σ = 127735200. Its totient is φ = 22553856.

The previous prime is 56577823. The next prime is 56577931. The reversal of 56577880 is 8877565.

It is a self number, because there is not a number n which added to its sum of digits gives 56577880.

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, 10261 + ... + 14779.

It is an arithmetic number, because the mean of its divisors is an integer number (3991725).

Almost surely, 2^56577880 is an apocalyptic number.

It is an amenable number.

56577880 is an abundant number, since it is smaller than the sum of its proper divisors (71157320).

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

56577880 is a wasteful number, since it uses less digits than its factorization.

56577880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4843 (or 4839 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 46.

The square root of 56577880 is about 7521.8269057457. The cubic root of 56577880 is about 383.8977411448.

The spelling of 56577880 in words is "fifty-six million, five hundred seventy-seven thousand, eight hundred eighty".