56921173 has 4 divisors (see below), whose sum is σ = 57016800. Its totient is φ = 56825548.

The previous prime is 56921167. The next prime is 56921191. The reversal of 56921173 is 37112965.

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 56921173 - 2¹⁷ = 56790101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56921153) 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, 46915 + ... + 48112.

It is an arithmetic number, because the mean of its divisors is an integer number (14254200).

Almost surely, 2^56921173 is an apocalyptic number.

It is an amenable number.

56921173 is a deficient number, since it is larger than the sum of its proper divisors (95627).

56921173 is an equidigital number, since it uses as much as digits as its factorization.

56921173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95626.

The product of its digits is 11340, while the sum is 34.

The square root of 56921173 is about 7544.6121835387. The cubic root of 56921173 is about 384.6726243846.

The spelling of 56921173 in words is "fifty-six million, nine hundred twenty-one thousand, one hundred seventy-three".