56530520 has 32 divisors (see below), whose sum is σ = 128437920. Its totient is φ = 22391040.

The previous prime is 56530511. The next prime is 56530603. The reversal of 56530520 is 2503565.

It is a self number, because there is not a number n which added to its sum of digits gives 56530520.

It is a congruent number.

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, 2741 + ... + 10980.

It is an arithmetic number, because the mean of its divisors is an integer number (4013685).

Almost surely, 2^56530520 is an apocalyptic number.

It is an amenable number.

56530520 is an abundant number, since it is smaller than the sum of its proper divisors (71907400).

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

56530520 is a wasteful number, since it uses less digits than its factorization.

56530520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13835 (or 13831 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 56530520 is about 7518.6780753002. The cubic root of 56530520 is about 383.7905940144.

The spelling of 56530520 in words is "fifty-six million, five hundred thirty thousand, five hundred twenty".