56028621 has 16 divisors (see below), whose sum is σ = 85040640. Its totient is φ = 32479920.

The previous prime is 56028593. The next prime is 56028629. The reversal of 56028621 is 12682065.

It is not a de Polignac number, because 56028621 - 2⁵ = 56028589 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56028629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36151 + ... + 37668.

It is an arithmetic number, because the mean of its divisors is an integer number (5315040).

Almost surely, 2^56028621 is an apocalyptic number.

It is an amenable number.

56028621 is a deficient number, since it is larger than the sum of its proper divisors (29012019).

56028621 is a wasteful number, since it uses less digits than its factorization.

56028621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73856.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 56028621 is about 7485.2268502698. The cubic root of 56028621 is about 382.6514040291.

The spelling of 56028621 in words is "fifty-six million, twenty-eight thousand, six hundred twenty-one".