56164018 has 4 divisors (see below), whose sum is σ = 84246030. Its totient is φ = 28082008.

The previous prime is 56164007. The next prime is 56164021. The reversal of 56164018 is 81046165.

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., 40742689 + 15421329 = 6383^2 + 3927^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14041003 + ... + 14041006.

Almost surely, 2^56164018 is an apocalyptic number.

56164018 is a deficient number, since it is larger than the sum of its proper divisors (28082012).

56164018 is a wasteful number, since it uses less digits than its factorization.

56164018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28082011.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 56164018 is about 7494.2656745007. The cubic root of 56164018 is about 382.9593905138.

The spelling of 56164018 in words is "fifty-six million, one hundred sixty-four thousand, eighteen".