56137665 has 16 divisors (see below), whose sum is σ = 89921088. Its totient is φ = 29906496.

The previous prime is 56137663. The next prime is 56137699. The reversal of 56137665 is 56673165.

56137665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56137665 - 2¹ = 56137663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56137663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17787 + ... + 20703.

It is an arithmetic number, because the mean of its divisors is an integer number (5620068).

Almost surely, 2^56137665 is an apocalyptic number.

It is an amenable number.

56137665 is a deficient number, since it is larger than the sum of its proper divisors (33783423).

56137665 is a wasteful number, since it uses less digits than its factorization.

56137665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4208.

The product of its digits is 113400, while the sum is 39.

The square root of 56137665 is about 7492.5072572537. The cubic root of 56137665 is about 382.8994843790.

It can be divided in two parts, 561 and 37665, that added together give a triangular number (38226 = T₂₇₆).

The spelling of 56137665 in words is "fifty-six million, one hundred thirty-seven thousand, six hundred sixty-five".