56555685 has 64 divisors (see below), whose sum is σ = 112147200. Its totient is φ = 26873856.

The previous prime is 56555683. The next prime is 56555729. The reversal of 56555685 is 58655565.

56555685 is a `hidden beast` number, since 565 + 5 + 5 + 6 + 85 = 666.

It is not a de Polignac number, because 56555685 - 2¹ = 56555683 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 56555685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56555683) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 42957 + ... + 44253.

It is an arithmetic number, because the mean of its divisors is an integer number (1752300).

Almost surely, 2^56555685 is an apocalyptic number.

It is an amenable number.

56555685 is a deficient number, since it is larger than the sum of its proper divisors (55591515).

56555685 is a wasteful number, since it uses less digits than its factorization.

56555685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347 (or 1341 counting only the distinct ones).

The product of its digits is 900000, while the sum is 45.

The square root of 56555685 is about 7520.3513880669. The cubic root of 56555685 is about 383.8475346873.

The spelling of 56555685 in words is "fifty-six million, five hundred fifty-five thousand, six hundred eighty-five".