56472521 has 32 divisors (see below), whose sum is σ = 72990720. Its totient is φ = 42552576.

The previous prime is 56472511. The next prime is 56472523. The reversal of 56472521 is 12527465.

It is not a de Polignac number, because 56472521 - 2²² = 52278217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56472523) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 128420 + ... + 128858.

It is an arithmetic number, because the mean of its divisors is an integer number (2280960).

Almost surely, 2^56472521 is an apocalyptic number.

It is an amenable number.

56472521 is a deficient number, since it is larger than the sum of its proper divisors (16518199).

56472521 is a wasteful number, since it uses less digits than its factorization.

56472521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533.

The product of its digits is 16800, while the sum is 32.

The square root of 56472521 is about 7514.8200909935. The cubic root of 56472521 is about 383.6592956906.

Adding to 56472521 its reverse (12527465), we get a palindrome (68999986).

The spelling of 56472521 in words is "fifty-six million, four hundred seventy-two thousand, five hundred twenty-one".