324560161 has 2 divisors, whose sum is σ = 324560162. Its totient is φ = 324560160.

The previous prime is 324560143. The next prime is 324560191. The reversal of 324560161 is 161065423.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 281736225 + 42823936 = 16785^2 + 6544^2 .

It is an emirp because it is prime and its reverse (161065423) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-324560161 is a prime.

It is not a weakly prime, because it can be changed into another prime (324560101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162280080 + 162280081.

It is an arithmetic number, because the mean of its divisors is an integer number (162280081).

Almost surely, 2^324560161 is an apocalyptic number.

It is an amenable number.

324560161 is a deficient number, since it is larger than the sum of its proper divisors (1).

324560161 is an equidigital number, since it uses as much as digits as its factorization.

324560161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 324560161 is about 18015.5533081835. The cubic root of 324560161 is about 687.2241350959.

The spelling of 324560161 in words is "three hundred twenty-four million, five hundred sixty thousand, one hundred sixty-one".