50813990 has 16 divisors (see below), whose sum is σ = 92754720. Its totient is φ = 20039040.

The previous prime is 50813981. The next prime is 50814007. The reversal of 50813990 is 9931805.

It is a self number, because there is not a number n which added to its sum of digits gives 50813990.

It is a congruent number.

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, 35075 + ... + 36494.

It is an arithmetic number, because the mean of its divisors is an integer number (5797170).

Almost surely, 2^50813990 is an apocalyptic number.

50813990 is a deficient number, since it is larger than the sum of its proper divisors (41940730).

50813990 is a wasteful number, since it uses less digits than its factorization.

50813990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71647.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 50813990 is about 7128.3932270884. The cubic root of 50813990 is about 370.3915747329.

The spelling of 50813990 in words is "fifty million, eight hundred thirteen thousand, nine hundred ninety".