165304241 has 2 divisors, whose sum is σ = 165304242. Its totient is φ = 165304240.

The previous prime is 165304231. The next prime is 165304247. The reversal of 165304241 is 142403561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103225600 + 62078641 = 10160^2 + 7879^2 .

It is a cyclic number.

It is not a de Polignac number, because 165304241 - 2¹⁰ = 165303217 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 165304241.

It is not a weakly prime, because it can be changed into another prime (165304247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82652120 + 82652121.

It is an arithmetic number, because the mean of its divisors is an integer number (82652121).

Almost surely, 2^165304241 is an apocalyptic number.

It is an amenable number.

165304241 is a deficient number, since it is larger than the sum of its proper divisors (1).

165304241 is an equidigital number, since it uses as much as digits as its factorization.

165304241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 165304241 is about 12857.0696894743. The cubic root of 165304241 is about 548.8175599801.

The spelling of 165304241 in words is "one hundred sixty-five million, three hundred four thousand, two hundred forty-one".