522625321 has 3 divisors (see below), whose sum is σ = 522648183. Its totient is φ = 522602460.

The previous prime is 522625303. The next prime is 522625357. The reversal of 522625321 is 123526225.

The square root of 522625321 is 22861.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 490135321 + 32490000 = 22139^2 + 5700^2 .

It is not a de Polignac number, because 522625321 - 2¹⁷ = 522494249 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 522625321.

It is not an unprimeable number, because it can be changed into a prime (522629321) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 11431 + ... + 34291.

It is an arithmetic number, because the mean of its divisors is an integer number (174216061).

Almost surely, 2^522625321 is an apocalyptic number.

522625321 is the 22861-st square number.

522625321 is the 11431-st centered octagonal number.

It is an amenable number.

522625321 is a deficient number, since it is larger than the sum of its proper divisors (22862).

522625321 is an frugal number, since it uses more digits than its factorization.

522625321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45722 (or 22861 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The cubic root of 522625321 is about 805.4961749572.

The spelling of 522625321 in words is "five hundred twenty-two million, six hundred twenty-five thousand, three hundred twenty-one".