50920013 has 2 divisors, whose sum is σ = 50920014. Its totient is φ = 50920012.

The previous prime is 50919983. The next prime is 50920039. The reversal of 50920013 is 31002905.

50920013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50651689 + 268324 = 7117^2 + 518^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50920013 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50920063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25460006 + 25460007.

It is an arithmetic number, because the mean of its divisors is an integer number (25460007).

Almost surely, 2^50920013 is an apocalyptic number.

It is an amenable number.

50920013 is a deficient number, since it is larger than the sum of its proper divisors (1).

50920013 is an equidigital number, since it uses as much as digits as its factorization.

50920013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 50920013 is about 7135.8260208612. The cubic root of 50920013 is about 370.6490021680.

Adding to 50920013 its reverse (31002905), we get a palindrome (81922918).

The spelling of 50920013 in words is "fifty million, nine hundred twenty thousand, thirteen".