56865120 has 144 divisors (see below), whose sum is σ = 194240592. Its totient is φ = 13977600.

The previous prime is 56865113. The next prime is 56865161. The reversal of 56865120 is 2156865.

It is a super-2 number, since 2×56865120² = 6467283745228800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80770 + ... + 81470.

It is an arithmetic number, because the mean of its divisors is an integer number (1348893).

Almost surely, 2^56865120 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56865120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97120296).

56865120 is an abundant number, since it is smaller than the sum of its proper divisors (137375472).

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

56865120 is a wasteful number, since it uses less digits than its factorization.

56865120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745 (or 724 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 56865120 is about 7540.8964984278. The cubic root of 56865120 is about 384.5463144072.

The spelling of 56865120 in words is "fifty-six million, eight hundred sixty-five thousand, one hundred twenty".