522623213 has 4 divisors (see below), whose sum is σ = 597283680. Its totient is φ = 447962748.

The previous prime is 522623183. The next prime is 522623237. The reversal of 522623213 is 312326225.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 522623213 - 2¹⁴ = 522606829 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (522623243) 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 in 3 ways as a sum of consecutive naturals, for example, 37330223 + ... + 37330236.

It is an arithmetic number, because the mean of its divisors is an integer number (149320920).

Almost surely, 2^522623213 is an apocalyptic number.

It is an amenable number.

522623213 is a deficient number, since it is larger than the sum of its proper divisors (74660467).

522623213 is an equidigital number, since it uses as much as digits as its factorization.

522623213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74660466.

The product of its digits is 4320, while the sum is 26.

The square root of 522623213 is about 22860.9538952337. The cubic root of 522623213 is about 805.4950919709.

Adding to 522623213 its reverse (312326225), we get a palindrome (834949438).

The spelling of 522623213 in words is "five hundred twenty-two million, six hundred twenty-three thousand, two hundred thirteen".