56164621 has 8 divisors (see below), whose sum is σ = 57495744. Its totient is φ = 54848640.

The previous prime is 56164609. The next prime is 56164639. The reversal of 56164621 is 12646165.

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 56164621 - 2¹⁵ = 56131853 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 (56164021) 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, 3901 + ... + 11293.

It is an arithmetic number, because the mean of its divisors is an integer number (7186968).

Almost surely, 2^56164621 is an apocalyptic number.

It is an amenable number.

56164621 is a deficient number, since it is larger than the sum of its proper divisors (1331123).

56164621 is a wasteful number, since it uses less digits than its factorization.

56164621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7571.

The product of its digits is 8640, while the sum is 31.

The square root of 56164621 is about 7494.3059051523. The cubic root of 56164621 is about 382.9607610454.

The spelling of 56164621 in words is "fifty-six million, one hundred sixty-four thousand, six hundred twenty-one".