165475201 has 2 divisors, whose sum is σ = 165475202. Its totient is φ = 165475200.

The previous prime is 165475187. The next prime is 165475213. The reversal of 165475201 is 102574561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 154977601 + 10497600 = 12449^2 + 3240^2 .

It is an emirp because it is prime and its reverse (102574561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 165475201 - 2⁹ = 165474689 is a prime.

It is not a weakly prime, because it can be changed into another prime (165475291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82737600 + 82737601.

It is an arithmetic number, because the mean of its divisors is an integer number (82737601).

Almost surely, 2^165475201 is an apocalyptic number.

It is an amenable number.

165475201 is a deficient number, since it is larger than the sum of its proper divisors (1).

165475201 is an equidigital number, since it uses as much as digits as its factorization.

165475201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 165475201 is about 12863.7164536537. The cubic root of 165475201 is about 549.0066931057.

The spelling of 165475201 in words is "one hundred sixty-five million, four hundred seventy-five thousand, two hundred one".