521303222303252 has 48 divisors (see below), whose sum is σ = 924848122080960. Its totient is φ = 257090510476800.

The previous prime is 521303222303239. The next prime is 521303222303257. The reversal of 521303222303252 is 252303222303125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521303222303257) 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, 51791843 + ... + 61032789.

It is an arithmetic number, because the mean of its divisors is an integer number (19267669210020).

Almost surely, 2^{521303222303252} is an apocalyptic number.

It is an amenable number.

521303222303252 is a deficient number, since it is larger than the sum of its proper divisors (403544899777708).

521303222303252 is a wasteful number, since it uses less digits than its factorization.

521303222303252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9241752 (or 9241750 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 35.

Adding to 521303222303252 its reverse (252303222303125), we get a palindrome (773606444606377).

The spelling of 521303222303252 in words is "five hundred twenty-one trillion, three hundred three billion, two hundred twenty-two million, three hundred three thousand, two hundred fifty-two".