50550139 has 2 divisors, whose sum is σ = 50550140. Its totient is φ = 50550138.

The previous prime is 50550133. The next prime is 50550169. The reversal of 50550139 is 93105505.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 50550139 - 2⁵ = 50550107 is a prime.

It is not a weakly prime, because it can be changed into another prime (50550133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25275069 + 25275070.

It is an arithmetic number, because the mean of its divisors is an integer number (25275070).

Almost surely, 2^50550139 is an apocalyptic number.

50550139 is a deficient number, since it is larger than the sum of its proper divisors (1).

50550139 is an equidigital number, since it uses as much as digits as its factorization.

50550139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3375, while the sum is 28.

The square root of 50550139 is about 7109.8620943025. The cubic root of 50550139 is about 369.7493773917.

The spelling of 50550139 in words is "fifty million, five hundred fifty thousand, one hundred thirty-nine".