56537685 has 12 divisors (see below), whose sum is σ = 97998732. Its totient is φ = 30153408.

The previous prime is 56537681. The next prime is 56537713. The reversal of 56537685 is 58673565.

56537685 is a `hidden beast` number, since 56 + 537 + 68 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8346321 + 48191364 = 2889^2 + 6942^2 .

It is not a de Polignac number, because 56537685 - 2² = 56537681 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1256393 = 56537685 / (5 + 6 + 5 + 3 + 7 + 6 + 8 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 56537685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56537681) 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, 628152 + ... + 628241.

It is an arithmetic number, because the mean of its divisors is an integer number (8166561).

Almost surely, 2^56537685 is an apocalyptic number.

It is an amenable number.

56537685 is a deficient number, since it is larger than the sum of its proper divisors (41461047).

56537685 is a wasteful number, since it uses less digits than its factorization.

56537685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1256404 (or 1256401 counting only the distinct ones).

The product of its digits is 756000, while the sum is 45.

The square root of 56537685 is about 7519.1545402392. The cubic root of 56537685 is about 383.8068079312.

The spelling of 56537685 in words is "fifty-six million, five hundred thirty-seven thousand, six hundred eighty-five".