522505226 has 4 divisors (see below), whose sum is σ = 783757842. Its totient is φ = 261252612.

The previous prime is 522505213. The next prime is 522505253. The reversal of 522505226 is 622505225.

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

It can be written as a sum of positive squares in only one way, i.e., 443313025 + 79192201 = 21055^2 + 8899^2 .

It is a super-2 number, since 2×522505226² = 546023422394622152, which contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 130626305 + ... + 130626308.

Almost surely, 2^522505226 is an apocalyptic number.

522505226 is a deficient number, since it is larger than the sum of its proper divisors (261252616).

522505226 is a wasteful number, since it uses less digits than its factorization.

522505226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261252615.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 522505226 is about 22858.3732142075. The cubic root of 522505226 is about 805.4344714322.

Subtracting 522505226 from its reverse (622505225), we obtain a palindrome (99999999).

The spelling of 522505226 in words is "five hundred twenty-two million, five hundred five thousand, two hundred twenty-six".