56572731 has 12 divisors (see below), whose sum is σ = 81859960. Its totient is φ = 37648800.

The previous prime is 56572693. The next prime is 56572751. The reversal of 56572731 is 13727565.

56572731 is a `hidden beast` number, since 56 + 572 + 7 + 31 = 666.

It is not a de Polignac number, because 56572731 - 2¹⁴ = 56556347 is a prime.

It is a super-2 number, since 2×56572731² = 6400947785596722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56572751) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 180 + ... + 10638.

Almost surely, 2^56572731 is an apocalyptic number.

56572731 is a deficient number, since it is larger than the sum of its proper divisors (25287229).

56572731 is a wasteful number, since it uses less digits than its factorization.

56572731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11066 (or 11063 counting only the distinct ones).

The product of its digits is 44100, while the sum is 36.

The square root of 56572731 is about 7521.4846273857. The cubic root of 56572731 is about 383.8860949594.

The spelling of 56572731 in words is "fifty-six million, five hundred seventy-two thousand, seven hundred thirty-one".