56623137 has 4 divisors (see below), whose sum is σ = 75497520. Its totient is φ = 37748756.

The previous prime is 56623093. The next prime is 56623153. The reversal of 56623137 is 73132665.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 56623137 - 2²⁴ = 39845921 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56623098 and 56623107.

It is not an unprimeable number, because it can be changed into a prime (56625137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9437187 + ... + 9437192.

It is an arithmetic number, because the mean of its divisors is an integer number (18874380).

Almost surely, 2^56623137 is an apocalyptic number.

It is an amenable number.

56623137 is a deficient number, since it is larger than the sum of its proper divisors (18874383).

56623137 is a wasteful number, since it uses less digits than its factorization.

56623137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18874382.

The product of its digits is 22680, while the sum is 33.

The square root of 56623137 is about 7524.8346825694. The cubic root of 56623137 is about 384.0000745985. Note that the first 4 decimals are identical.

Subtracting from 56623137 its sum of digits (33), we obtain a cube (56623104 = 384³).

The spelling of 56623137 in words is "fifty-six million, six hundred twenty-three thousand, one hundred thirty-seven".