50509639 has 2 divisors, whose sum is σ = 50509640. Its totient is φ = 50509638.

The previous prime is 50509637. The next prime is 50509687. The reversal of 50509639 is 93690505.

50509639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 50509639 - 2¹ = 50509637 is a prime.

Together with 50509637, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 50509598 and 50509607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50509637) 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, 25254819 + 25254820.

It is an arithmetic number, because the mean of its divisors is an integer number (25254820).

Almost surely, 2^50509639 is an apocalyptic number.

50509639 is a deficient number, since it is larger than the sum of its proper divisors (1).

50509639 is an equidigital number, since it uses as much as digits as its factorization.

50509639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36450, while the sum is 37.

The square root of 50509639 is about 7107.0133670903. The cubic root of 50509639 is about 369.6506051557.

The spelling of 50509639 in words is "fifty million, five hundred nine thousand, six hundred thirty-nine".