56231560 has 64 divisors (see below), whose sum is σ = 157749120. Its totient is φ = 17525760.

The previous prime is 56231537. The next prime is 56231561. The reversal of 56231560 is 6513265.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (56231561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6049 + ... + 12208.

It is an arithmetic number, because the mean of its divisors is an integer number (2464830).

Almost surely, 2^56231560 is an apocalyptic number.

It is an amenable number.

56231560 is an abundant number, since it is smaller than the sum of its proper divisors (101517560).

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

56231560 is a wasteful number, since it uses less digits than its factorization.

56231560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18286 (or 18282 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 56231560 is about 7498.7705658995. The cubic root of 56231560 is about 383.1128427439.

The spelling of 56231560 in words is "fifty-six million, two hundred thirty-one thousand, five hundred sixty".