50981904 has 30 divisors (see below), whose sum is σ = 142678926. Its totient is φ = 16993920.

The previous prime is 50981899. The next prime is 50981941. The reversal of 50981904 is 40918905.

It can be written as a sum of positive squares in only one way, i.e., 50979600 + 2304 = 7140^2 + 48^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 176877 + ... + 177164.

Almost surely, 2^50981904 is an apocalyptic number.

It is an amenable number.

50981904 is an abundant number, since it is smaller than the sum of its proper divisors (91697022).

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

50981904 is a wasteful number, since it uses less digits than its factorization.

50981904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354055 (or 354046 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 50981904 is about 7140.1613427149. The cubic root of 50981904 is about 370.7991104666.

The spelling of 50981904 in words is "fifty million, nine hundred eighty-one thousand, nine hundred four".