522313643 has 4 divisors (see below), whose sum is σ = 522376728. Its totient is φ = 522250560.

The previous prime is 522313639. The next prime is 522313657. The reversal of 522313643 is 346313225.

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

It is a cyclic number.

It is not a de Polignac number, because 522313643 - 2² = 522313639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (522313633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16838 + ... + 36443.

It is an arithmetic number, because the mean of its divisors is an integer number (130594182).

Almost surely, 2^522313643 is an apocalyptic number.

522313643 is a deficient number, since it is larger than the sum of its proper divisors (63085).

522313643 is an equidigital number, since it uses as much as digits as its factorization.

522313643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63084.

The product of its digits is 12960, while the sum is 29.

The square root of 522313643 is about 22854.1821774484. The cubic root of 522313643 is about 805.3360185631.

Adding to 522313643 its reverse (346313225), we get a palindrome (868626868).

The spelling of 522313643 in words is "five hundred twenty-two million, three hundred thirteen thousand, six hundred forty-three".