56553959 has 16 divisors (see below), whose sum is σ = 71366400. Its totient is φ = 43532160.

The previous prime is 56553947. The next prime is 56553961. The reversal of 56553959 is 95935565.

It is not a de Polignac number, because 56553959 - 2⁴ = 56553943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56553979) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1967 + ... + 10815.

It is an arithmetic number, because the mean of its divisors is an integer number (4460400).

Almost surely, 2^56553959 is an apocalyptic number.

56553959 is a deficient number, since it is larger than the sum of its proper divisors (14812441).

56553959 is a wasteful number, since it uses less digits than its factorization.

56553959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8950.

The product of its digits is 911250, while the sum is 47.

The square root of 56553959 is about 7520.2366319152. The cubic root of 56553959 is about 383.8436298185.

The spelling of 56553959 in words is "fifty-six million, five hundred fifty-three thousand, nine hundred fifty-nine".