56972618 has 4 divisors (see below), whose sum is σ = 85458930. Its totient is φ = 28486308.

The previous prime is 56972609. The next prime is 56972623. The reversal of 56972618 is 81627965.

56972618 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 55905529 + 1067089 = 7477^2 + 1033^2 .

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 as a sum of consecutive naturals, namely, 14243153 + ... + 14243156.

Almost surely, 2^56972618 is an apocalyptic number.

56972618 is a deficient number, since it is larger than the sum of its proper divisors (28486312).

56972618 is a wasteful number, since it uses less digits than its factorization.

56972618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28486311.

The product of its digits is 181440, while the sum is 44.

The square root of 56972618 is about 7548.0208001833. The cubic root of 56972618 is about 384.7884777261.

The spelling of 56972618 in words is "fifty-six million, nine hundred seventy-two thousand, six hundred eighteen".