56577864 has 32 divisors (see below), whose sum is σ = 161651520. Its totient is φ = 16165056.

The previous prime is 56577823. The next prime is 56577931. The reversal of 56577864 is 46877565.

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, 168219 + ... + 168554.

It is an arithmetic number, because the mean of its divisors is an integer number (5051610).

Almost surely, 2^56577864 is an apocalyptic number.

It is an amenable number.

56577864 is an abundant number, since it is smaller than the sum of its proper divisors (105073656).

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

56577864 is a wasteful number, since it uses less digits than its factorization.

56577864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336789 (or 336785 counting only the distinct ones).

The product of its digits is 1411200, while the sum is 48.

The square root of 56577864 is about 7521.8258421742. The cubic root of 56577864 is about 383.8977049566.

The spelling of 56577864 in words is "fifty-six million, five hundred seventy-seven thousand, eight hundred sixty-four".