56928973 has 4 divisors (see below), whose sum is σ = 56945088. Its totient is φ = 56912860.

The previous prime is 56928941. The next prime is 56929003. The reversal of 56928973 is 37982965.

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, and also an emirpimes, since its reverse is a distinct semiprime: 37982965 = 5 ⋅7596593.

It is a cyclic number.

It is not a de Polignac number, because 56928973 - 2⁵ = 56928941 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 (56928373) 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, 211 + ... + 10672.

It is an arithmetic number, because the mean of its divisors is an integer number (14236272).

Almost surely, 2^56928973 is an apocalyptic number.

It is an amenable number.

56928973 is a deficient number, since it is larger than the sum of its proper divisors (16115).

56928973 is a wasteful number, since it uses less digits than its factorization.

56928973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16114.

The product of its digits is 816480, while the sum is 49.

The square root of 56928973 is about 7545.1290910096. The cubic root of 56928973 is about 384.6901943518.

The spelling of 56928973 in words is "fifty-six million, nine hundred twenty-eight thousand, nine hundred seventy-three".