328521041 has 2 divisors, whose sum is σ = 328521042. Its totient is φ = 328521040.

The previous prime is 328520993. The next prime is 328521091. The reversal of 328521041 is 140125823.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 326561041 + 1960000 = 18071^2 + 1400^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-328521041 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 328521041.

It is not a weakly prime, because it can be changed into another prime (328521091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164260520 + 164260521.

It is an arithmetic number, because the mean of its divisors is an integer number (164260521).

Almost surely, 2^328521041 is an apocalyptic number.

It is an amenable number.

328521041 is a deficient number, since it is larger than the sum of its proper divisors (1).

328521041 is an equidigital number, since it uses as much as digits as its factorization.

328521041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 328521041 is about 18125.1494062808. The cubic root of 328521041 is about 690.0084301988.

Adding to 328521041 its reverse (140125823), we get a palindrome (468646864).

The spelling of 328521041 in words is "three hundred twenty-eight million, five hundred twenty-one thousand, forty-one".