56635155 has 12 divisors (see below), whose sum is σ = 98167680. Its totient is φ = 30205392.

The previous prime is 56635151. The next prime is 56635157. The reversal of 56635155 is 55153665.

56635155 is a `hidden beast` number, since 5 + 6 + 635 + 15 + 5 = 666.

It is not a de Polignac number, because 56635155 - 2² = 56635151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56635151) 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, 629235 + ... + 629324.

It is an arithmetic number, because the mean of its divisors is an integer number (8180640).

Almost surely, 2^56635155 is an apocalyptic number.

56635155 is a deficient number, since it is larger than the sum of its proper divisors (41532525).

56635155 is a wasteful number, since it uses less digits than its factorization.

56635155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1258570 (or 1258567 counting only the distinct ones).

The product of its digits is 67500, while the sum is 36.

The square root of 56635155 is about 7525.6331959510. The cubic root of 56635155 is about 384.0272400923.

It can be divided in two parts, 566 and 35155, that added together give a square (35721 = 189²).

The spelling of 56635155 in words is "fifty-six million, six hundred thirty-five thousand, one hundred fifty-five".