56173356 has 18 divisors (see below), whose sum is σ = 141993852. Its totient is φ = 18724440.

The previous prime is 56173349. The next prime is 56173373. The reversal of 56173356 is 65337165.

It is a happy number.

56173356 is a `hidden beast` number, since 5 + 617 + 3 + 35 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1560371 = 56173356 / (5 + 6 + 1 + 7 + 3 + 3 + 5 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 56173356.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 780150 + ... + 780221.

Almost surely, 2^56173356 is an apocalyptic number.

It is an amenable number.

56173356 is an abundant number, since it is smaller than the sum of its proper divisors (85820496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56173356 is a wasteful number, since it uses less digits than its factorization.

56173356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1560381 (or 1560376 counting only the distinct ones).

The product of its digits is 56700, while the sum is 36.

The square root of 56173356 is about 7494.8886582791. Note that the first 3 decimals coincide. The cubic root of 56173356 is about 382.9806133343.

The spelling of 56173356 in words is "fifty-six million, one hundred seventy-three thousand, three hundred fifty-six".