522412321 has 2 divisors, whose sum is σ = 522412322. Its totient is φ = 522412320.

The previous prime is 522412307. The next prime is 522412339. The reversal of 522412321 is 123214225.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 402203025 + 120209296 = 20055^2 + 10964^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-522412321 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 522412292 and 522412301.

It is not a weakly prime, because it can be changed into another prime (522412301) by changing a digit.

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, 261206160 + 261206161.

It is an arithmetic number, because the mean of its divisors is an integer number (261206161).

Almost surely, 2^522412321 is an apocalyptic number.

It is an amenable number.

522412321 is a deficient number, since it is larger than the sum of its proper divisors (1).

522412321 is an equidigital number, since it uses as much as digits as its factorization.

522412321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 960, while the sum is 22.

The square root of 522412321 is about 22856.3409363791. The cubic root of 522412321 is about 805.3867313514.

Adding to 522412321 its reverse (123214225), we get a palindrome (645626546).

The spelling of 522412321 in words is "five hundred twenty-two million, four hundred twelve thousand, three hundred twenty-one".