50138657 has 2 divisors, whose sum is σ = 50138658. Its totient is φ = 50138656.

The previous prime is 50138653. The next prime is 50138659. The reversal of 50138657 is 75683105.

50138657 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., 36529936 + 13608721 = 6044^2 + 3689^2 .

It is a cyclic number.

It is not a de Polignac number, because 50138657 - 2² = 50138653 is a prime.

Together with 50138659, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (50138653) 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, 25069328 + 25069329.

It is an arithmetic number, because the mean of its divisors is an integer number (25069329).

Almost surely, 2^50138657 is an apocalyptic number.

It is an amenable number.

50138657 is a deficient number, since it is larger than the sum of its proper divisors (1).

50138657 is an equidigital number, since it uses as much as digits as its factorization.

50138657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 50138657 is about 7080.8655544361. The cubic root of 50138657 is about 368.7433800593.

The spelling of 50138657 in words is "fifty million, one hundred thirty-eight thousand, six hundred fifty-seven".