56488921 has 4 divisors (see below), whose sum is σ = 56673232. Its totient is φ = 56304612.

The previous prime is 56488907. The next prime is 56488931. The reversal of 56488921 is 12988465.

It is a happy number.

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 56488921 - 2⁷ = 56488793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56488931) 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, 91695 + ... + 92308.

It is an arithmetic number, because the mean of its divisors is an integer number (14168308).

Almost surely, 2^56488921 is an apocalyptic number.

It is an amenable number.

56488921 is a deficient number, since it is larger than the sum of its proper divisors (184311).

56488921 is a wasteful number, since it uses less digits than its factorization.

56488921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184310.

The product of its digits is 138240, while the sum is 43.

The square root of 56488921 is about 7515.9111889378. The cubic root of 56488921 is about 383.6964311762.

The spelling of 56488921 in words is "fifty-six million, four hundred eighty-eight thousand, nine hundred twenty-one".