56172916 has 12 divisors (see below), whose sum is σ = 99649732. Its totient is φ = 27701568.

The previous prime is 56172889. The next prime is 56172917. The reversal of 56172916 is 61927165.

It can be written as a sum of positive squares in 2 ways, for example, as 47196900 + 8976016 = 6870^2 + 2996^2 .

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56172917) 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, 95895 + ... + 96478.

Almost surely, 2^56172916 is an apocalyptic number.

It is an amenable number.

56172916 is a deficient number, since it is larger than the sum of its proper divisors (43476816).

56172916 is a wasteful number, since it uses less digits than its factorization.

56172916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192450 (or 192448 counting only the distinct ones).

The product of its digits is 22680, while the sum is 37.

The square root of 56172916 is about 7494.8593048836. The cubic root of 56172916 is about 382.9796133827.

The spelling of 56172916 in words is "fifty-six million, one hundred seventy-two thousand, nine hundred sixteen".