50220913 has 2 divisors, whose sum is σ = 50220914. Its totient is φ = 50220912.

The previous prime is 50220887. The next prime is 50220917. The reversal of 50220913 is 31902205.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45927729 + 4293184 = 6777^2 + 2072^2 .

It is a cyclic number.

It is not a de Polignac number, because 50220913 - 2⁵ = 50220881 is a prime.

It is not a weakly prime, because it can be changed into another prime (50220917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25110456 + 25110457.

It is an arithmetic number, because the mean of its divisors is an integer number (25110457).

Almost surely, 2^50220913 is an apocalyptic number.

It is an amenable number.

50220913 is a deficient number, since it is larger than the sum of its proper divisors (1).

50220913 is an equidigital number, since it uses as much as digits as its factorization.

50220913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 50220913 is about 7086.6715036045. The cubic root of 50220913 is about 368.9449197193.

The spelling of 50220913 in words is "fifty million, two hundred twenty thousand, nine hundred thirteen".