56516655 has 32 divisors (see below), whose sum is σ = 99771840. Its totient is φ = 27141120.

The previous prime is 56516591. The next prime is 56516657. The reversal of 56516655 is 55661565.

It is not a de Polignac number, because 56516655 - 2⁶ = 56516591 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56516657) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4461 + ... + 11529.

It is an arithmetic number, because the mean of its divisors is an integer number (3117870).

Almost surely, 2^56516655 is an apocalyptic number.

56516655 is a deficient number, since it is larger than the sum of its proper divisors (43255185).

56516655 is a wasteful number, since it uses less digits than its factorization.

56516655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7131.

The product of its digits is 135000, while the sum is 39.

The square root of 56516655 is about 7517.7559816743. The cubic root of 56516655 is about 383.7592145538.

The spelling of 56516655 in words is "fifty-six million, five hundred sixteen thousand, six hundred fifty-five".