50725139 has 2 divisors, whose sum is σ = 50725140. Its totient is φ = 50725138.

The previous prime is 50725123. The next prime is 50725151. The reversal of 50725139 is 93152705.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 50725139 - 2⁴ = 50725123 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (50745139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25362569 + 25362570.

It is an arithmetic number, because the mean of its divisors is an integer number (25362570).

Almost surely, 2^50725139 is an apocalyptic number.

50725139 is a deficient number, since it is larger than the sum of its proper divisors (1).

50725139 is an equidigital number, since it uses as much as digits as its factorization.

50725139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9450, while the sum is 32.

The square root of 50725139 is about 7122.1583105123. The cubic root of 50725139 is about 370.1755655728.

The spelling of 50725139 in words is "fifty million, seven hundred twenty-five thousand, one hundred thirty-nine".