56641599 has 72 divisors (see below), whose sum is σ = 101582208. Its totient is φ = 31434480.

The previous prime is 56641591. The next prime is 56641639. The reversal of 56641599 is 99514665.

It is a happy number.

56641599 is a `hidden beast` number, since 56 + 6 + 4 + 1 + 599 = 666.

It is not a de Polignac number, because 56641599 - 2³ = 56641591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56641591) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 797734 + ... + 797804.

It is an arithmetic number, because the mean of its divisors is an integer number (1410864).

Almost surely, 2^56641599 is an apocalyptic number.

56641599 is a deficient number, since it is larger than the sum of its proper divisors (44940609).

56641599 is an equidigital number, since it uses as much as digits as its factorization.

56641599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167 (or 148 counting only the distinct ones).

The product of its digits is 291600, while the sum is 45.

The square root of 56641599 is about 7526.0613205049. The cubic root of 56641599 is about 384.0418045308.

The spelling of 56641599 in words is "fifty-six million, six hundred forty-one thousand, five hundred ninety-nine".