56553957 has 20 divisors (see below), whose sum is σ = 85106560. Its totient is φ = 37423944.

The previous prime is 56553947. The next prime is 56553961. The reversal of 56553957 is 75935565.

56553957 is a `hidden beast` number, since 5 + 6 + 553 + 95 + 7 = 666.

It is not a de Polignac number, because 56553957 - 2¹⁰ = 56552933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56553907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8748 + ... + 13770.

It is an arithmetic number, because the mean of its divisors is an integer number (4255328).

Almost surely, 2^56553957 is an apocalyptic number.

It is an amenable number.

56553957 is a deficient number, since it is larger than the sum of its proper divisors (28552603).

56553957 is a wasteful number, since it uses less digits than its factorization.

56553957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5174 (or 5165 counting only the distinct ones).

The product of its digits is 708750, while the sum is 45.

The square root of 56553957 is about 7520.2364989407. The cubic root of 56553957 is about 383.8436252937.

The spelling of 56553957 in words is "fifty-six million, five hundred fifty-three thousand, nine hundred fifty-seven".