56136520 has 32 divisors (see below), whose sum is σ = 137790720. Its totient is φ = 20413120.

The previous prime is 56136497. The next prime is 56136523. The reversal of 56136520 is 2563165.

It is not an unprimeable number, because it can be changed into a prime (56136523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63352 + ... + 64231.

It is an arithmetic number, because the mean of its divisors is an integer number (4305960).

Almost surely, 2^56136520 is an apocalyptic number.

It is an amenable number.

56136520 is an abundant number, since it is smaller than the sum of its proper divisors (81654200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56136520 is a wasteful number, since it uses less digits than its factorization.

56136520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127605 (or 127601 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 56136520 is about 7492.4308471951. The cubic root of 56136520 is about 382.8968811186.

Adding to 56136520 its reverse (2563165), we get a palindrome (58699685).

The spelling of 56136520 in words is "fifty-six million, one hundred thirty-six thousand, five hundred twenty".