50391131 has 8 divisors (see below), whose sum is σ = 57633024. Its totient is φ = 43160040.

The previous prime is 50391119. The next prime is 50391149. The reversal of 50391131 is 13119305.

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

It is not a de Polignac number, because 50391131 - 2²² = 46196827 is a prime.

It is a super-2 number, since 2×50391131² = 5078532166918322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50391097 and 50391106.

It is not an unprimeable number, because it can be changed into a prime (50391101) 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 7 ways as a sum of consecutive naturals, for example, 15476 + ... + 18446.

It is an arithmetic number, because the mean of its divisors is an integer number (7204128).

Almost surely, 2^50391131 is an apocalyptic number.

50391131 is a deficient number, since it is larger than the sum of its proper divisors (7241893).

50391131 is a wasteful number, since it uses less digits than its factorization.

50391131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5401.

The product of its (nonzero) digits is 405, while the sum is 23.

The square root of 50391131 is about 7098.6710728136. The cubic root of 50391131 is about 369.3612817723.

The spelling of 50391131 in words is "fifty million, three hundred ninety-one thousand, one hundred thirty-one".