56318918 has 4 divisors (see below), whose sum is σ = 84478380. Its totient is φ = 28159458.

The previous prime is 56318917. The next prime is 56318963. The reversal of 56318918 is 81981365.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81981365 = 5 ⋅16396273.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56318917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14079728 + ... + 14079731.

It is an arithmetic number, because the mean of its divisors is an integer number (21119595).

Almost surely, 2^56318918 is an apocalyptic number.

56318918 is a deficient number, since it is larger than the sum of its proper divisors (28159462).

56318918 is a wasteful number, since it uses less digits than its factorization.

56318918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28159461.

The product of its digits is 51840, while the sum is 41.

The square root of 56318918 is about 7504.5931268790. The cubic root of 56318918 is about 383.3111338541.

The spelling of 56318918 in words is "fifty-six million, three hundred eighteen thousand, nine hundred eighteen".