56171856 has 40 divisors (see below), whose sum is σ = 156274720. Its totient is φ = 17283456.

The previous prime is 56171839. The next prime is 56171861. The reversal of 56171856 is 65817165.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44386 + ... + 45633.

It is an arithmetic number, because the mean of its divisors is an integer number (3906868).

Almost surely, 2^56171856 is an apocalyptic number.

It is an amenable number.

56171856 is an abundant number, since it is smaller than the sum of its proper divisors (100102864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56171856 is a wasteful number, since it uses less digits than its factorization.

56171856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90043 (or 90037 counting only the distinct ones).

The product of its digits is 50400, while the sum is 39.

The square root of 56171856 is about 7494.7885894133. The cubic root of 56171856 is about 382.9772043869.

The spelling of 56171856 in words is "fifty-six million, one hundred seventy-one thousand, eight hundred fifty-six".