56491933 has 8 divisors (see below), whose sum is σ = 60542208. Its totient is φ = 52574544.

The previous prime is 56491871. The next prime is 56491937. The reversal of 56491933 is 33919465.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56491933 - 2¹⁷ = 56360861 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 (56491937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32341 + ... + 34042.

It is an arithmetic number, because the mean of its divisors is an integer number (7567776).

Almost surely, 2^56491933 is an apocalyptic number.

It is an amenable number.

56491933 is a deficient number, since it is larger than the sum of its proper divisors (4050275).

56491933 is a wasteful number, since it uses less digits than its factorization.

56491933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66443.

The product of its digits is 87480, while the sum is 40.

The square root of 56491933 is about 7516.1115611731. Note that the first 3 decimals coincide. The cubic root of 56491933 is about 383.7032506438.

The spelling of 56491933 in words is "fifty-six million, four hundred ninety-one thousand, nine hundred thirty-three".