50818978 has 24 divisors (see below), whose sum is σ = 90138204. Its totient is φ = 21420000.

The previous prime is 50818969. The next prime is 50818981. The reversal of 50818978 is 87981805.

It can be written as a sum of positive squares in 2 ways, for example, as 37002889 + 13816089 = 6083^2 + 3717^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1728 + ... + 10228.

Almost surely, 2^50818978 is an apocalyptic number.

50818978 is a deficient number, since it is larger than the sum of its proper divisors (39319226).

50818978 is a wasteful number, since it uses less digits than its factorization.

50818978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8578 (or 8571 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 46.

The square root of 50818978 is about 7128.7430869684. The cubic root of 50818978 is about 370.4036937886.

The spelling of 50818978 in words is "fifty million, eight hundred eighteen thousand, nine hundred seventy-eight".