165482321 has 2 divisors, whose sum is σ = 165482322. Its totient is φ = 165482320.

The previous prime is 165482299. The next prime is 165482341. The reversal of 165482321 is 123284561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89094721 + 76387600 = 9439^2 + 8740^2 .

It is a cyclic number.

It is not a de Polignac number, because 165482321 - 2⁶ = 165482257 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (165482341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82741160 + 82741161.

It is an arithmetic number, because the mean of its divisors is an integer number (82741161).

Almost surely, 2^165482321 is an apocalyptic number.

It is an amenable number.

165482321 is a deficient number, since it is larger than the sum of its proper divisors (1).

165482321 is an equidigital number, since it uses as much as digits as its factorization.

165482321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 32.

The square root of 165482321 is about 12863.9931980703. The cubic root of 165482321 is about 549.0145671387.

The spelling of 165482321 in words is "one hundred sixty-five million, four hundred eighty-two thousand, three hundred twenty-one".