52505533221 has 8 divisors (see below), whose sum is σ = 70477226400. Its totient is φ = 34768764432.

The previous prime is 52505533219. The next prime is 52505533231. The reversal of 52505533221 is 12233550525.

52505533221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 52505533221 - 2¹ = 52505533219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52505533231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58730575 + ... + 58731468.

It is an arithmetic number, because the mean of its divisors is an integer number (8809653300).

Almost surely, 2^52505533221 is an apocalyptic number.

It is an amenable number.

52505533221 is a deficient number, since it is larger than the sum of its proper divisors (17971693179).

52505533221 is a wasteful number, since it uses less digits than its factorization.

52505533221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117462195.

The product of its (nonzero) digits is 45000, while the sum is 33.

The spelling of 52505533221 in words is "fifty-two billion, five hundred five million, five hundred thirty-three thousand, two hundred twenty-one".