56431564 has 24 divisors (see below), whose sum is σ = 116756640. Its totient is φ = 23350656.

The previous prime is 56431547. The next prime is 56431567. The reversal of 56431564 is 46513465.

It is not an unprimeable number, because it can be changed into a prime (56431567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33937 + ... + 35560.

It is an arithmetic number, because the mean of its divisors is an integer number (4864860).

Almost surely, 2^56431564 is an apocalyptic number.

It is an amenable number.

56431564 is an abundant number, since it is smaller than the sum of its proper divisors (60325076).

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

56431564 is a wasteful number, since it uses less digits than its factorization.

56431564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69537 (or 69535 counting only the distinct ones).

The product of its digits is 43200, while the sum is 34.

The square root of 56431564 is about 7512.0945148474. The cubic root of 56431564 is about 383.5665229355.

The spelling of 56431564 in words is "fifty-six million, four hundred thirty-one thousand, five hundred sixty-four".