50818185 has 120 divisors (see below), whose sum is σ = 107758728. Its totient is φ = 22809600.

The previous prime is 50818181. The next prime is 50818193. The reversal of 50818185 is 58181805.

It can be written as a sum of positive squares in 4 ways, for example, as 1411344 + 49406841 = 1188^2 + 7029^2 .

It is not a de Polignac number, because 50818185 - 2² = 50818181 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a zygodrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50818181) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 833055 + ... + 833115.

Almost surely, 2^50818185 is an apocalyptic number.

50818185 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

50818185 is an abundant number, since it is smaller than the sum of its proper divisors (56940543).

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

50818185 is a wasteful number, since it uses less digits than its factorization.

50818185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117 (or 97 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 36.

The square root of 50818185 is about 7128.6874668483. The cubic root of 50818185 is about 370.4017671353.

The spelling of 50818185 in words is "fifty million, eight hundred eighteen thousand, one hundred eighty-five".