50979621 has 32 divisors (see below), whose sum is σ = 85248000. Its totient is φ = 26326080.

The previous prime is 50979613. The next prime is 50979637. The reversal of 50979621 is 12697905.

It is not a de Polignac number, because 50979621 - 2³ = 50979613 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 50979621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50979671) 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, 45415 + ... + 46523.

It is an arithmetic number, because the mean of its divisors is an integer number (2664000).

Almost surely, 2^50979621 is an apocalyptic number.

It is an amenable number.

50979621 is a deficient number, since it is larger than the sum of its proper divisors (34268379).

50979621 is a wasteful number, since it uses less digits than its factorization.

50979621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1329.

The product of its (nonzero) digits is 34020, while the sum is 39.

The square root of 50979621 is about 7140.0014705881. The cubic root of 50979621 is about 370.7935755157.

The spelling of 50979621 in words is "fifty million, nine hundred seventy-nine thousand, six hundred twenty-one".