50505050005021 has 16 divisors (see below), whose sum is σ = 55320626136240. Its totient is φ = 45894480593920.

The previous prime is 50505050004989. The next prime is 50505050005049. The reversal of 50505050005021 is 12050005050505.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 10045413302500 + 40459636702521 = 3169450^2 + 6360789^2 .

It is a cyclic number.

It is not a de Polignac number, because 50505050005021 - 2⁵ = 50505050004989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50505050005051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41560911 + ... + 42758851.

It is an arithmetic number, because the mean of its divisors is an integer number (3457539133515).

Almost surely, 2^{50505050005021} is an apocalyptic number.

It is an amenable number.

50505050005021 is a deficient number, since it is larger than the sum of its proper divisors (4815576131219).

50505050005021 is a wasteful number, since it uses less digits than its factorization.

50505050005021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1283504.

The product of its (nonzero) digits is 6250, while the sum is 28.

Adding to 50505050005021 its reverse (12050005050505), we get a palindrome (62555055055526).

The spelling of 50505050005021 in words is "fifty trillion, five hundred five billion, fifty million, five thousand, twenty-one".