56536947 has 20 divisors (see below), whose sum is σ = 84663216. Its totient is φ = 37599120.

The previous prime is 56536897. The next prime is 56536993. The reversal of 56536947 is 74963565.

It is not a de Polignac number, because 56536947 - 2⁷ = 56536819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56536147) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 54322 + ... + 55352.

Almost surely, 2^56536947 is an apocalyptic number.

56536947 is a deficient number, since it is larger than the sum of its proper divisors (28126269).

56536947 is a wasteful number, since it uses less digits than its factorization.

56536947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1720 (or 1711 counting only the distinct ones).

The product of its digits is 680400, while the sum is 45.

The square root of 56536947 is about 7519.1054654128. The cubic root of 56536947 is about 383.8051379498.

The spelling of 56536947 in words is "fifty-six million, five hundred thirty-six thousand, nine hundred forty-seven".