50131881 has 24 divisors (see below), whose sum is σ = 76003200. Its totient is φ = 31781376.

The previous prime is 50131871. The next prime is 50131891. The reversal of 50131881 is 18813105.

It is an interprime number because it is at equal distance from previous prime (50131871) and next prime (50131891).

It is not a de Polignac number, because 50131881 - 2¹⁴ = 50115497 is a prime.

It is a super-2 number, since 2×50131881² = 5026410985196322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (50131811) 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 23 ways as a sum of consecutive naturals, for example, 40585 + ... + 41801.

It is an arithmetic number, because the mean of its divisors is an integer number (3166800).

Almost surely, 2^50131881 is an apocalyptic number.

It is an amenable number.

50131881 is a deficient number, since it is larger than the sum of its proper divisors (25871319).

50131881 is a wasteful number, since it uses less digits than its factorization.

50131881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1445 (or 1442 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 27.

The square root of 50131881 is about 7080.3870656907. The cubic root of 50131881 is about 368.7267680087.

Adding to 50131881 its reverse (18813105), we get a palindrome (68944986).

The spelling of 50131881 in words is "fifty million, one hundred thirty-one thousand, eight hundred eighty-one".