56515115 has 16 divisors (see below), whose sum is σ = 70253568. Its totient is φ = 43614816.

The previous prime is 56515111. The next prime is 56515141. The reversal of 56515115 is 51151565.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 56515115 - 2² = 56515111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56515111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16262 + ... + 19428.

It is an arithmetic number, because the mean of its divisors is an integer number (4390848).

Almost surely, 2^56515115 is an apocalyptic number.

56515115 is a deficient number, since it is larger than the sum of its proper divisors (13738453).

56515115 is a wasteful number, since it uses less digits than its factorization.

56515115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3298.

The product of its digits is 3750, while the sum is 29.

The square root of 56515115 is about 7517.6535567955. The cubic root of 56515115 is about 383.7557288877.

The spelling of 56515115 in words is "fifty-six million, five hundred fifteen thousand, one hundred fifteen".