50138971 has 4 divisors (see below), whose sum is σ = 50198200. Its totient is φ = 50079744.

The previous prime is 50138969. The next prime is 50139029. The reversal of 50138971 is 17983105.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 50138971 - 2¹ = 50138969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50138471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28326 + ... + 30043.

It is an arithmetic number, because the mean of its divisors is an integer number (12549550).

Almost surely, 2^50138971 is an apocalyptic number.

50138971 is a deficient number, since it is larger than the sum of its proper divisors (59229).

50138971 is an equidigital number, since it uses as much as digits as its factorization.

50138971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59228.

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 50138971 is about 7080.8877268320. The cubic root of 50138971 is about 368.7441498258.

The spelling of 50138971 in words is "fifty million, one hundred thirty-eight thousand, nine hundred seventy-one".