328521841 has 2 divisors, whose sum is σ = 328521842. Its totient is φ = 328521840.

The previous prime is 328521793. The next prime is 328521883. The reversal of 328521841 is 148125823.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 241491600 + 87030241 = 15540^2 + 9329^2 .

It is a cyclic number.

It is not a de Polignac number, because 328521841 - 2⁹ = 328521329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 328521797 and 328521806.

It is not a weakly prime, because it can be changed into another prime (328521041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164260920 + 164260921.

It is an arithmetic number, because the mean of its divisors is an integer number (164260921).

Almost surely, 2^328521841 is an apocalyptic number.

It is an amenable number.

328521841 is a deficient number, since it is larger than the sum of its proper divisors (1).

328521841 is an equidigital number, since it uses as much as digits as its factorization.

328521841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15360, while the sum is 34.

The square root of 328521841 is about 18125.1714750509. The cubic root of 328521841 is about 690.0089902910.

The spelling of 328521841 in words is "three hundred twenty-eight million, five hundred twenty-one thousand, eight hundred forty-one".