50131986 has 32 divisors (see below), whose sum is σ = 102885120. Its totient is φ = 16277376.

The previous prime is 50131967. The next prime is 50131987. The reversal of 50131986 is 68913105.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (50131987) 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, 109470 + ... + 109926.

It is an arithmetic number, because the mean of its divisors is an integer number (3215160).

Almost surely, 2^50131986 is an apocalyptic number.

50131986 is an abundant number, since it is smaller than the sum of its proper divisors (52753134).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

50131986 is a wasteful number, since it uses less digits than its factorization.

50131986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 50131986 is about 7080.3944805357. The cubic root of 50131986 is about 368.7270254383.

The spelling of 50131986 in words is "fifty million, one hundred thirty-one thousand, nine hundred eighty-six".