56447992 has 16 divisors (see below), whose sum is σ = 108302040. Its totient is φ = 27567456.

The previous prime is 56447981. The next prime is 56447999. The reversal of 56447992 is 29974465.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56447999) 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, 81703 + ... + 82390.

Almost surely, 2^56447992 is an apocalyptic number.

It is an amenable number.

56447992 is a deficient number, since it is larger than the sum of its proper divisors (51854048).

56447992 is a wasteful number, since it uses less digits than its factorization.

56447992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164142 (or 164138 counting only the distinct ones).

The product of its digits is 544320, while the sum is 46.

The square root of 56447992 is about 7513.1878720021. The cubic root of 56447992 is about 383.6037398110.

The spelling of 56447992 in words is "fifty-six million, four hundred forty-seven thousand, nine hundred ninety-two".