56515120 has 40 divisors (see below), whose sum is σ = 138317040. Its totient is φ = 21415680.

The previous prime is 56515111. The next prime is 56515141. The reversal of 56515120 is 2151565.

56515120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×56515120² = 6387917577228800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17071 + ... + 20110.

It is an arithmetic number, because the mean of its divisors is an integer number (3457926).

Almost surely, 2^56515120 is an apocalyptic number.

It is an amenable number.

56515120 is an abundant number, since it is smaller than the sum of its proper divisors (81801920).

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

56515120 is a wasteful number, since it uses less digits than its factorization.

56515120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37213 (or 37207 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 56515120 is about 7517.6538893461. The cubic root of 56515120 is about 383.7557402049.

Adding to 56515120 its reverse (2151565), we get a palindrome (58666685).

The spelling of 56515120 in words is "fifty-six million, five hundred fifteen thousand, one hundred twenty".