56621135 has 16 divisors (see below), whose sum is σ = 73478016. Its totient is φ = 41722368.

The previous prime is 56621129. The next prime is 56621161. The reversal of 56621135 is 53112665.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56621135 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56621098 and 56621107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3092 + ... + 11081.

It is an arithmetic number, because the mean of its divisors is an integer number (4592376).

Almost surely, 2^56621135 is an apocalyptic number.

56621135 is a deficient number, since it is larger than the sum of its proper divisors (16856881).

56621135 is a wasteful number, since it uses less digits than its factorization.

56621135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14242.

The product of its digits is 5400, while the sum is 29.

The square root of 56621135 is about 7524.7016552153. The cubic root of 56621135 is about 383.9955489031.

The spelling of 56621135 in words is "fifty-six million, six hundred twenty-one thousand, one hundred thirty-five".