56573918 has 8 divisors (see below), whose sum is σ = 85814640. Its totient is φ = 27969040.

The previous prime is 56573911. The next prime is 56573921. The reversal of 56573918 is 81937565.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56573911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158738 + ... + 159093.

It is an arithmetic number, because the mean of its divisors is an integer number (10726830).

Almost surely, 2^56573918 is an apocalyptic number.

56573918 is a deficient number, since it is larger than the sum of its proper divisors (29240722).

56573918 is a wasteful number, since it uses less digits than its factorization.

56573918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317922.

The product of its digits is 226800, while the sum is 44.

The square root of 56573918 is about 7521.5635342660. The cubic root of 56573918 is about 383.8887798196. Note that the first 3 decimals are identical.

The spelling of 56573918 in words is "fifty-six million, five hundred seventy-three thousand, nine hundred eighteen".