324322561 has 2 divisors, whose sum is σ = 324322562. Its totient is φ = 324322560.

The previous prime is 324322553. The next prime is 324322577. The reversal of 324322561 is 165223423.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 236544400 + 87778161 = 15380^2 + 9369^2 .

It is a cyclic number.

It is not a de Polignac number, because 324322561 - 2³ = 324322553 is a prime.

It is not a weakly prime, because it can be changed into another prime (324322511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162161280 + 162161281.

It is an arithmetic number, because the mean of its divisors is an integer number (162161281).

Almost surely, 2^324322561 is an apocalyptic number.

It is an amenable number.

324322561 is a deficient number, since it is larger than the sum of its proper divisors (1).

324322561 is an equidigital number, since it uses as much as digits as its factorization.

324322561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 28.

The square root of 324322561 is about 18008.9577988289. The cubic root of 324322561 is about 687.0563959672.

Adding to 324322561 its reverse (165223423), we get a palindrome (489545984).

The spelling of 324322561 in words is "three hundred twenty-four million, three hundred twenty-two thousand, five hundred sixty-one".