50818881 has 4 divisors (see below), whose sum is σ = 67758512. Its totient is φ = 33879252.

The previous prime is 50818879. The next prime is 50818907. The reversal of 50818881 is 18881805.

50818881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 50818881 - 2¹ = 50818879 is a prime.

It is a super-2 number, since 2×50818881² = 5165117332184322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (50818811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8469811 + ... + 8469816.

It is an arithmetic number, because the mean of its divisors is an integer number (16939628).

Almost surely, 2^50818881 is an apocalyptic number.

It is an amenable number.

50818881 is a deficient number, since it is larger than the sum of its proper divisors (16939631).

50818881 is a wasteful number, since it uses less digits than its factorization.

50818881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16939630.

The product of its (nonzero) digits is 20480, while the sum is 39.

The square root of 50818881 is about 7128.7362835218. The cubic root of 50818881 is about 370.4034581209.

The spelling of 50818881 in words is "fifty million, eight hundred eighteen thousand, eight hundred eighty-one".