50507139 has 4 divisors (see below), whose sum is σ = 67342856. Its totient is φ = 33671424.

The previous prime is 50507137. The next prime is 50507141. The reversal of 50507139 is 93170505.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (50507137) and next prime (50507141).

It is not a de Polignac number, because 50507139 - 2¹ = 50507137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50507131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8417854 + ... + 8417859.

It is an arithmetic number, because the mean of its divisors is an integer number (16835714).

Almost surely, 2^50507139 is an apocalyptic number.

50507139 is a deficient number, since it is larger than the sum of its proper divisors (16835717).

50507139 is a wasteful number, since it uses less digits than its factorization.

50507139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16835716.

The product of its (nonzero) digits is 4725, while the sum is 30.

The square root of 50507139 is about 7106.8374823124. The cubic root of 50507139 is about 369.6445063742.

The spelling of 50507139 in words is "fifty million, five hundred seven thousand, one hundred thirty-nine".