56216615 has 16 divisors (see below), whose sum is σ = 83028288. Its totient is φ = 35582976.

The previous prime is 56216599. The next prime is 56216621. The reversal of 56216615 is 51661265.

It is not a de Polignac number, because 56216615 - 2⁴ = 56216599 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61322 + ... + 62231.

It is an arithmetic number, because the mean of its divisors is an integer number (5189268).

Almost surely, 2^56216615 is an apocalyptic number.

56216615 is a deficient number, since it is larger than the sum of its proper divisors (26811673).

56216615 is a wasteful number, since it uses less digits than its factorization.

56216615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123578.

The product of its digits is 10800, while the sum is 32.

The square root of 56216615 is about 7497.7740029958. The cubic root of 56216615 is about 383.0788990016.

The spelling of 56216615 in words is "fifty-six million, two hundred sixteen thousand, six hundred fifteen".