56915 has 4 divisors (see below), whose sum is σ = 68304. Its totient is φ = 45528.

The previous prime is 56911. The next prime is 56921. The reversal of 56915 is 51965.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56915 - 2² = 56911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5687 + ... + 5696.

It is an arithmetic number, because the mean of its divisors is an integer number (17076).

2⁵⁶⁹¹⁵ is an apocalyptic number.

56915 is a deficient number, since it is larger than the sum of its proper divisors (11389).

56915 is a wasteful number, since it uses less digits than its factorization.

56915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11388.

The product of its digits is 1350, while the sum is 26.

The square root of 56915 is about 238.5686484013. The cubic root of 56915 is about 38.4658718194.

Subtracting from 56915 its reverse (51965), we obtain a triangular number (4950 = T₉₉).

The spelling of 56915 in words is "fifty-six thousand, nine hundred fifteen".