56139718 has 8 divisors (see below), whose sum is σ = 88641720. Its totient is φ = 26592480.

The previous prime is 56139709. The next prime is 56139779. The reversal of 56139718 is 81793165.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 738643 + ... + 738718.

It is an arithmetic number, because the mean of its divisors is an integer number (11080215).

Almost surely, 2^56139718 is an apocalyptic number.

56139718 is a deficient number, since it is larger than the sum of its proper divisors (32502002).

56139718 is a wasteful number, since it uses less digits than its factorization.

56139718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1477382.

The product of its digits is 45360, while the sum is 40.

The square root of 56139718 is about 7492.6442595388. The cubic root of 56139718 is about 382.9041519705.

The spelling of 56139718 in words is "fifty-six million, one hundred thirty-nine thousand, seven hundred eighteen".