56391992 has 24 divisors (see below), whose sum is σ = 112325160. Its totient is φ = 26536320.

The previous prime is 56391991. The next prime is 56392003. The reversal of 56391992 is 29919365.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56391991) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9884 + ... + 14507.

It is an arithmetic number, because the mean of its divisors is an integer number (4680215).

Almost surely, 2^56391992 is an apocalyptic number.

It is an amenable number.

56391992 is a deficient number, since it is larger than the sum of its proper divisors (55933168).

56391992 is a wasteful number, since it uses less digits than its factorization.

56391992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24431 (or 24410 counting only the distinct ones).

The product of its digits is 131220, while the sum is 44.

The square root of 56391992 is about 7509.4601670160. The cubic root of 56391992 is about 383.4768447326.

The spelling of 56391992 in words is "fifty-six million, three hundred ninety-one thousand, nine hundred ninety-two".