522259609 has 3 divisors (see below), whose sum is σ = 522282463. Its totient is φ = 522236756.

The previous prime is 522259607. The next prime is 522259649. The reversal of 522259609 is 906952225.

The square root of 522259609 is 22853.

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., 88454025 + 433805584 = 9405^2 + 20828^2 .

It is not a de Polignac number, because 522259609 - 2¹ = 522259607 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (522259607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 11427 + ... + 34279.

Almost surely, 2^522259609 is an apocalyptic number.

522259609 is the 22853-rd square number.

522259609 is the 11427-th centered octagonal number.

It is an amenable number.

522259609 is a deficient number, since it is larger than the sum of its proper divisors (22854).

522259609 is an frugal number, since it uses more digits than its factorization.

522259609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45706 (or 22853 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 40.

The cubic root of 522259609 is about 805.3082465991.

The spelling of 522259609 in words is "five hundred twenty-two million, two hundred fifty-nine thousand, six hundred nine".