56137757 has 16 divisors (see below), whose sum is σ = 64275120. Its totient is φ = 48571392.

The previous prime is 56137727. The next prime is 56137771. The reversal of 56137757 is 75773165.

It can be written as a sum of positive squares in 8 ways, for example, as 5812921 + 50324836 = 2411^2 + 7094^2 .

It is a cyclic number.

It is not a de Polignac number, because 56137757 - 2¹⁶ = 56072221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56137727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85643 + ... + 86295.

It is an arithmetic number, because the mean of its divisors is an integer number (4017195).

Almost surely, 2^56137757 is an apocalyptic number.

It is an amenable number.

56137757 is a deficient number, since it is larger than the sum of its proper divisors (8137363).

56137757 is a wasteful number, since it uses less digits than its factorization.

56137757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072.

The product of its digits is 154350, while the sum is 41.

The square root of 56137757 is about 7492.5133967181. The cubic root of 56137757 is about 382.8996935478.

The spelling of 56137757 in words is "fifty-six million, one hundred thirty-seven thousand, seven hundred fifty-seven".