52504510221 has 12 divisors (see below), whose sum is σ = 76019995740. Its totient is φ = 34919861760.

The previous prime is 52504510133. The next prime is 52504510231. The reversal of 52504510221 is 12201540525.

52504510221 is a `hidden beast` number, since 52 + 504 + 5 + 102 + 2 + 1 = 666.

52504510221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 15826898025 + 36677612196 = 125805^2 + 191514^2 .

It is not a de Polignac number, because 52504510221 - 2¹⁷ = 52504379149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52504510231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6924756 + ... + 6932333.

It is an arithmetic number, because the mean of its divisors is an integer number (6334999645).

Almost surely, 2^52504510221 is an apocalyptic number.

It is an amenable number.

52504510221 is a deficient number, since it is larger than the sum of its proper divisors (23515485519).

52504510221 is a wasteful number, since it uses less digits than its factorization.

52504510221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13857516 (or 13857513 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The spelling of 52504510221 in words is "fifty-two billion, five hundred four million, five hundred ten thousand, two hundred twenty-one".