56173690 has 32 divisors (see below), whose sum is σ = 109045440. Its totient is φ = 20764800.

The previous prime is 56173669. The next prime is 56173703. The reversal of 56173690 is 9637165.

56173690 = 179² + 180² + ... + 558².

56173690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×56173690² = 6310966896432200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4185 + ... + 11395.

It is an arithmetic number, because the mean of its divisors is an integer number (3407670).

Almost surely, 2^56173690 is an apocalyptic number.

56173690 is a deficient number, since it is larger than the sum of its proper divisors (52871750).

56173690 is a wasteful number, since it uses less digits than its factorization.

56173690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7278.

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 56173690 is about 7494.9109400980. The cubic root of 56173690 is about 382.9813723849.

The spelling of 56173690 in words is "fifty-six million, one hundred seventy-three thousand, six hundred ninety".