50020139 has 8 divisors (see below), whose sum is σ = 54627552. Its totient is φ = 45521280.

The previous prime is 50020129. The next prime is 50020151. The reversal of 50020139 is 93102005.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 50020139 - 2¹⁶ = 49954603 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 50020139.

It is not an unprimeable number, because it can be changed into a prime (50020129) 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, 26174 + ... + 28019.

It is an arithmetic number, because the mean of its divisors is an integer number (6828444).

Almost surely, 2^50020139 is an apocalyptic number.

50020139 is a deficient number, since it is larger than the sum of its proper divisors (4607413).

50020139 is a wasteful number, since it uses less digits than its factorization.

50020139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54277.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 50020139 is about 7072.4917108470. The cubic root of 50020139 is about 368.4526050317.

The spelling of 50020139 in words is "fifty million, twenty thousand, one hundred thirty-nine".