56469621 has 32 divisors (see below), whose sum is σ = 83894272. Its totient is φ = 33566400.

The previous prime is 56469613. The next prime is 56469629. The reversal of 56469621 is 12696465.

It is an interprime number because it is at equal distance from previous prime (56469613) and next prime (56469629).

It is not a de Polignac number, because 56469621 - 2³ = 56469613 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

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 56469621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56469629) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 253116 + ... + 253338.

It is an arithmetic number, because the mean of its divisors is an integer number (2621696).

Almost surely, 2^56469621 is an apocalyptic number.

It is an amenable number.

56469621 is a deficient number, since it is larger than the sum of its proper divisors (27424651).

56469621 is a wasteful number, since it uses less digits than its factorization.

56469621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433.

The product of its digits is 77760, while the sum is 39.

The square root of 56469621 is about 7514.6271364586. The cubic root of 56469621 is about 383.6527283018.

The spelling of 56469621 in words is "fifty-six million, four hundred sixty-nine thousand, six hundred twenty-one".