50135139 has 8 divisors (see below), whose sum is σ = 74274320. Its totient is φ = 33423408.

The previous prime is 50135131. The next prime is 50135143. The reversal of 50135139 is 93153105.

It is not a de Polignac number, because 50135139 - 2³ = 50135131 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1856857 = 50135139 / (5 + 0 + 1 + 3 + 5 + 1 + 3 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50135131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 928402 + ... + 928455.

It is an arithmetic number, because the mean of its divisors is an integer number (9284290).

Almost surely, 2^50135139 is an apocalyptic number.

50135139 is a deficient number, since it is larger than the sum of its proper divisors (24139181).

50135139 is a wasteful number, since it uses less digits than its factorization.

50135139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1856866 (or 1856860 counting only the distinct ones).

The product of its (nonzero) digits is 2025, while the sum is 27.

The square root of 50135139 is about 7080.6171341204. The cubic root of 50135139 is about 368.7347555127.

The spelling of 50135139 in words is "fifty million, one hundred thirty-five thousand, one hundred thirty-nine".