50815986 has 16 divisors (see below), whose sum is σ = 109449984. Its totient is φ = 15635664.

The previous prime is 50815979. The next prime is 50815991. The reversal of 50815986 is 68951805.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 325666 + ... + 325821.

It is an arithmetic number, because the mean of its divisors is an integer number (6840624).

Almost surely, 2^50815986 is an apocalyptic number.

50815986 is an abundant number, since it is smaller than the sum of its proper divisors (58633998).

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

50815986 is a wasteful number, since it uses less digits than its factorization.

50815986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651505.

The product of its (nonzero) digits is 86400, while the sum is 42.

The square root of 50815986 is about 7128.5332292134. The cubic root of 50815986 is about 370.3964243941.

The spelling of 50815986 in words is "fifty million, eight hundred fifteen thousand, nine hundred eighty-six".