522320999 has 2 divisors, whose sum is σ = 522321000. Its totient is φ = 522320998.

The previous prime is 522320983. The next prime is 522321067. The reversal of 522320999 is 999023225.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 522320999 - 2⁴ = 522320983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (522320959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261160499 + 261160500.

It is an arithmetic number, because the mean of its divisors is an integer number (261160500).

Almost surely, 2^522320999 is an apocalyptic number.

522320999 is a deficient number, since it is larger than the sum of its proper divisors (1).

522320999 is an equidigital number, since it uses as much as digits as its factorization.

522320999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 87480, while the sum is 41.

The square root of 522320999 is about 22854.3431102274. The cubic root of 522320999 is about 805.3397991932.

The spelling of 522320999 in words is "five hundred twenty-two million, three hundred twenty thousand, nine hundred ninety-nine".