326493221 has 2 divisors, whose sum is σ = 326493222. Its totient is φ = 326493220.

The previous prime is 326493203. The next prime is 326493253. The reversal of 326493221 is 122394623.

It is an a-pointer prime, because the next prime (326493253) can be obtained adding 326493221 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 326344225 + 148996 = 18065^2 + 386^2 .

It is a cyclic number.

It is not a de Polignac number, because 326493221 - 2¹⁰ = 326492197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (326493821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163246610 + 163246611.

It is an arithmetic number, because the mean of its divisors is an integer number (163246611).

Almost surely, 2^326493221 is an apocalyptic number.

It is an amenable number.

326493221 is a deficient number, since it is larger than the sum of its proper divisors (1).

326493221 is an equidigital number, since it uses as much as digits as its factorization.

326493221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 32.

The square root of 326493221 is about 18069.1234153735. The cubic root of 326493221 is about 688.5857899946.

The spelling of 326493221 in words is "three hundred twenty-six million, four hundred ninety-three thousand, two hundred twenty-one".