56570720 has 24 divisors (see below), whose sum is σ = 133648704. Its totient is φ = 22628224.

The previous prime is 56570719. The next prime is 56570783. The reversal of 56570720 is 2707565.

It is a happy number.

It is a super-2 number, since 2×56570720² = 6400492722636800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176624 + ... + 176943.

It is an arithmetic number, because the mean of its divisors is an integer number (5568696).

Almost surely, 2^56570720 is an apocalyptic number.

It is an amenable number.

56570720 is an abundant number, since it is smaller than the sum of its proper divisors (77077984).

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

56570720 is a wasteful number, since it uses less digits than its factorization.

56570720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353582 (or 353574 counting only the distinct ones).

The product of its (nonzero) digits is 14700, while the sum is 32.

The square root of 56570720 is about 7521.3509424837. The cubic root of 56570720 is about 383.8815462185.

The spelling of 56570720 in words is "fifty-six million, five hundred seventy thousand, seven hundred twenty".