326272021 has 2 divisors, whose sum is σ = 326272022. Its totient is φ = 326272020.

The previous prime is 326271949. The next prime is 326272039. The reversal of 326272021 is 120272623.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 299636100 + 26635921 = 17310^2 + 5161^2 .

It is an emirp because it is prime and its reverse (120272623) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 326272021 - 2⁷ = 326271893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (326272061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163136010 + 163136011.

It is an arithmetic number, because the mean of its divisors is an integer number (163136011).

Almost surely, 2^326272021 is an apocalyptic number.

It is an amenable number.

326272021 is a deficient number, since it is larger than the sum of its proper divisors (1).

326272021 is an equidigital number, since it uses as much as digits as its factorization.

326272021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 326272021 is about 18063.0014394065. The cubic root of 326272021 is about 688.4302486460.

The spelling of 326272021 in words is "three hundred twenty-six million, two hundred seventy-two thousand, twenty-one".