50920921 has 2 divisors, whose sum is σ = 50920922. Its totient is φ = 50920920.

The previous prime is 50920907. The next prime is 50920937. The reversal of 50920921 is 12902905.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33582025 + 17338896 = 5795^2 + 4164^2 .

It is a cyclic number.

It is not a de Polignac number, because 50920921 - 2¹¹ = 50918873 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 50920921.

It is not a weakly prime, because it can be changed into another prime (50920721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25460460 + 25460461.

It is an arithmetic number, because the mean of its divisors is an integer number (25460461).

Almost surely, 2^50920921 is an apocalyptic number.

It is an amenable number.

50920921 is a deficient number, since it is larger than the sum of its proper divisors (1).

50920921 is an equidigital number, since it uses as much as digits as its factorization.

50920921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 50920921 is about 7135.8896432050. The cubic root of 50920921 is about 370.6512052788.

The spelling of 50920921 in words is "fifty million, nine hundred twenty thousand, nine hundred twenty-one".