50018512 has 20 divisors (see below), whose sum is σ = 97081956. Its totient is φ = 24965120.

The previous prime is 50018509. The next prime is 50018513. The reversal of 50018512 is 21581005.

It can be written as a sum of positive squares in 2 ways, for example, as 30869136 + 19149376 = 5556^2 + 4376^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50018513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7818 + ... + 12694.

Almost surely, 2^50018512 is an apocalyptic number.

It is an amenable number.

50018512 is a deficient number, since it is larger than the sum of its proper divisors (47063444).

50018512 is a wasteful number, since it uses less digits than its factorization.

50018512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5526 (or 5520 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 50018512 is about 7072.3766868006. The cubic root of 50018512 is about 368.4486101148.

Adding to 50018512 its reverse (21581005), we get a palindrome (71599517).

The spelling of 50018512 in words is "fifty million, eighteen thousand, five hundred twelve".