56605131 has 36 divisors (see below), whose sum is σ = 91498680. Its totient is φ = 33686400.

The previous prime is 56605127. The next prime is 56605141. The reversal of 56605131 is 13150665.

It is a happy number.

56605131 is a `hidden beast` number, since 56 + 605 + 1 + 3 + 1 = 666.

It is not a de Polignac number, because 56605131 - 2² = 56605127 is a prime.

It is a super-2 number, since 2×56605131² = 6408281711054322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 56605095 and 56605104.

It is not an unprimeable number, because it can be changed into a prime (56605141) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 63811 + ... + 64691.

It is an arithmetic number, because the mean of its divisors is an integer number (2541630).

Almost surely, 2^56605131 is an apocalyptic number.

56605131 is a deficient number, since it is larger than the sum of its proper divisors (34893549).

56605131 is a wasteful number, since it uses less digits than its factorization.

56605131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968 (or 954 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 56605131 is about 7523.6381491935. The cubic root of 56605131 is about 383.9593666315.

Adding to 56605131 its reverse (13150665), we get a palindrome (69755796).

The spelling of 56605131 in words is "fifty-six million, six hundred five thousand, one hundred thirty-one".