56943621 has 32 divisors (see below), whose sum is σ = 99532800. Its totient is φ = 31486320.

The previous prime is 56943619. The next prime is 56943637. The reversal of 56943621 is 12634965.

It is a happy number.

It is not a de Polignac number, because 56943621 - 2¹ = 56943619 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 (56943611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1000 + ... + 10718.

It is an arithmetic number, because the mean of its divisors is an integer number (3110400).

Almost surely, 2^56943621 is an apocalyptic number.

It is an amenable number.

56943621 is a deficient number, since it is larger than the sum of its proper divisors (42589179).

56943621 is a wasteful number, since it uses less digits than its factorization.

56943621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9766 (or 9760 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 56943621 is about 7546.0997210480. The cubic root of 56943621 is about 384.7231855127.

The spelling of 56943621 in words is "fifty-six million, nine hundred forty-three thousand, six hundred twenty-one".