50911639 has 2 divisors, whose sum is σ = 50911640. Its totient is φ = 50911638.

The previous prime is 50911589. The next prime is 50911657. The reversal of 50911639 is 93611905.

50911639 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 is a cyclic number.

It is not a de Polignac number, because 50911639 - 2¹¹ = 50909591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50911339) 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, 25455819 + 25455820.

It is an arithmetic number, because the mean of its divisors is an integer number (25455820).

Almost surely, 2^50911639 is an apocalyptic number.

50911639 is a deficient number, since it is larger than the sum of its proper divisors (1).

50911639 is an equidigital number, since it uses as much as digits as its factorization.

50911639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7290, while the sum is 34.

The square root of 50911639 is about 7135.2392391566. The cubic root of 50911639 is about 370.6286828167.

The spelling of 50911639 in words is "fifty million, nine hundred eleven thousand, six hundred thirty-nine".