50591881 has 16 divisors (see below), whose sum is σ = 57106944. Its totient is φ = 44560384.

The previous prime is 50591873. The next prime is 50591887. The reversal of 50591881 is 18819505.

It is not a de Polignac number, because 50591881 - 2³ = 50591873 is a prime.

It is a super-2 number, since 2×50591881² = 5119076846236322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 50591881.

It is not an unprimeable number, because it can be changed into a prime (50591887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17001 + ... + 19753.

It is an arithmetic number, because the mean of its divisors is an integer number (3569184).

Almost surely, 2^50591881 is an apocalyptic number.

It is an amenable number.

50591881 is a deficient number, since it is larger than the sum of its proper divisors (6515063).

50591881 is a wasteful number, since it uses less digits than its factorization.

50591881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2840.

The product of its (nonzero) digits is 14400, while the sum is 37.

The square root of 50591881 is about 7112.7969885271. The cubic root of 50591881 is about 369.8511234502.

The spelling of 50591881 in words is "fifty million, five hundred ninety-one thousand, eight hundred eighty-one".