56131641 has 12 divisors (see below), whose sum is σ = 82965168. Its totient is φ = 36550584.

The previous prime is 56131619. The next prime is 56131657. The reversal of 56131641 is 14613165.

56131641 is a `hidden beast` number, since 5 + 6 + 13 + 1 + 641 = 666.

It is not a de Polignac number, because 56131641 - 2⁵ = 56131609 is a prime.

It is a super-2 number, since 2×56131641² = 6301522242705762, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (56131241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72135 + ... + 72908.

It is an arithmetic number, because the mean of its divisors is an integer number (6913764).

Almost surely, 2^56131641 is an apocalyptic number.

It is an amenable number.

56131641 is a deficient number, since it is larger than the sum of its proper divisors (26833527).

56131641 is a wasteful number, since it uses less digits than its factorization.

56131641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145092 (or 145089 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 56131641 is about 7492.1052448561. The cubic root of 56131641 is about 382.8857878765.

It can be divided in two parts, 5613164 and 1, that added together give a palindrome (5613165).

The spelling of 56131641 in words is "fifty-six million, one hundred thirty-one thousand, six hundred forty-one".