56705172 has 12 divisors (see below), whose sum is σ = 132312096. Its totient is φ = 18901720.

The previous prime is 56705161. The next prime is 56705197. The reversal of 56705172 is 27150765.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2362704 + ... + 2362727.

It is an arithmetic number, because the mean of its divisors is an integer number (11026008).

Almost surely, 2^56705172 is an apocalyptic number.

It is an amenable number.

56705172 is an abundant number, since it is smaller than the sum of its proper divisors (75606924).

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

56705172 is a wasteful number, since it uses less digits than its factorization.

56705172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4725438 (or 4725436 counting only the distinct ones).

The product of its (nonzero) digits is 14700, while the sum is 33.

The square root of 56705172 is about 7530.2836599958. The cubic root of 56705172 is about 384.1854301913.

The spelling of 56705172 in words is "fifty-six million, seven hundred five thousand, one hundred seventy-two".