56530823 has 4 divisors (see below), whose sum is σ = 56962488. Its totient is φ = 56099160.

The previous prime is 56530819. The next prime is 56530879. The reversal of 56530823 is 32803565.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56530823 - 2² = 56530819 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56530823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56530813) 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, 215636 + ... + 215897.

It is an arithmetic number, because the mean of its divisors is an integer number (14240622).

Almost surely, 2^56530823 is an apocalyptic number.

56530823 is a deficient number, since it is larger than the sum of its proper divisors (431665).

56530823 is a wasteful number, since it uses less digits than its factorization.

56530823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431664.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 56530823 is about 7518.6982250919. The cubic root of 56530823 is about 383.7912797110.

The spelling of 56530823 in words is "fifty-six million, five hundred thirty thousand, eight hundred twenty-three".