50638109 has 2 divisors, whose sum is σ = 50638110. Its totient is φ = 50638108.

The previous prime is 50638103. The next prime is 50638127. The reversal of 50638109 is 90183605.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50623225 + 14884 = 7115^2 + 122^2 .

It is a cyclic number.

It is not a de Polignac number, because 50638109 - 2¹⁶ = 50572573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50638103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25319054 + 25319055.

It is an arithmetic number, because the mean of its divisors is an integer number (25319055).

Almost surely, 2^50638109 is an apocalyptic number.

It is an amenable number.

50638109 is a deficient number, since it is larger than the sum of its proper divisors (1).

50638109 is an equidigital number, since it uses as much as digits as its factorization.

50638109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 50638109 is about 7116.0458823703. The cubic root of 50638109 is about 369.9637388374.

The spelling of 50638109 in words is "fifty million, six hundred thirty-eight thousand, one hundred nine".