323225521 has 2 divisors, whose sum is σ = 323225522. Its totient is φ = 323225520.

The previous prime is 323225479. The next prime is 323225543. The reversal of 323225521 is 125522323.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 283080625 + 40144896 = 16825^2 + 6336^2 .

It is a cyclic number.

It is not a de Polignac number, because 323225521 - 2²³ = 314836913 is a prime.

It is not a weakly prime, because it can be changed into another prime (323222521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161612760 + 161612761.

It is an arithmetic number, because the mean of its divisors is an integer number (161612761).

Almost surely, 2^323225521 is an apocalyptic number.

It is an amenable number.

323225521 is a deficient number, since it is larger than the sum of its proper divisors (1).

323225521 is an equidigital number, since it uses as much as digits as its factorization.

323225521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3600, while the sum is 25.

The square root of 323225521 is about 17978.4738228805. The cubic root of 323225521 is about 686.2808514082.

Adding to 323225521 its reverse (125522323), we get a palindrome (448747844).

The spelling of 323225521 in words is "three hundred twenty-three million, two hundred twenty-five thousand, five hundred twenty-one".