522251423343253 has 4 divisors (see below), whose sum is σ = 540260093113740. Its totient is φ = 504242753572768.

The previous prime is 522251423343241. The next prime is 522251423343269. The reversal of 522251423343253 is 352343324152225.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 99248576920164 + 423002846423089 = 9962358^2 + 20567033^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-522251423343253 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 (522251423343203) 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, 9004334885200 + ... + 9004334885257.

It is an arithmetic number, because the mean of its divisors is an integer number (135065023278435).

Almost surely, 2^{522251423343253} is an apocalyptic number.

It is an amenable number.

522251423343253 is a deficient number, since it is larger than the sum of its proper divisors (18008669770487).

522251423343253 is a wasteful number, since it uses less digits than its factorization.

522251423343253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18008669770486.

The product of its digits is 5184000, while the sum is 46.

Adding to 522251423343253 its reverse (352343324152225), we get a palindrome (874594747495478).

The spelling of 522251423343253 in words is "five hundred twenty-two trillion, two hundred fifty-one billion, four hundred twenty-three million, three hundred forty-three thousand, two hundred fifty-three".