522313243 has 2 divisors, whose sum is σ = 522313244. Its totient is φ = 522313242.

The previous prime is 522313237. The next prime is 522313247. The reversal of 522313243 is 342313225.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-522313243 is a prime.

It is a super-2 number, since 2×522313243² = 545622247626354098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (522313247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261156621 + 261156622.

It is an arithmetic number, because the mean of its divisors is an integer number (261156622).

Almost surely, 2^522313243 is an apocalyptic number.

522313243 is a deficient number, since it is larger than the sum of its proper divisors (1).

522313243 is an equidigital number, since it uses as much as digits as its factorization.

522313243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 25.

The square root of 522313243 is about 22854.1734263132. The cubic root of 522313243 is about 805.3358129813.

Adding to 522313243 its reverse (342313225), we get a palindrome (864626468).

The spelling of 522313243 in words is "five hundred twenty-two million, three hundred thirteen thousand, two hundred forty-three".