56916615 has 16 divisors (see below), whose sum is σ = 104076288. Its totient is φ = 26018976.

The previous prime is 56916611. The next prime is 56916623. The reversal of 56916615 is 51661965.

It is not a de Polignac number, because 56916615 - 2² = 56916611 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56916611) 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, 270927 + ... + 271136.

It is an arithmetic number, because the mean of its divisors is an integer number (6504768).

Almost surely, 2^56916615 is an apocalyptic number.

56916615 is a deficient number, since it is larger than the sum of its proper divisors (47159673).

56916615 is a wasteful number, since it uses less digits than its factorization.

56916615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542078.

The product of its digits is 48600, while the sum is 39.

The square root of 56916615 is about 7544.3101076242. The cubic root of 56916615 is about 384.6623564735.

The spelling of 56916615 in words is "fifty-six million, nine hundred sixteen thousand, six hundred fifteen".