165335171 has 2 divisors, whose sum is σ = 165335172. Its totient is φ = 165335170.

The previous prime is 165335153. The next prime is 165335197. The reversal of 165335171 is 171533561.

It is a weak prime.

It is an emirp because it is prime and its reverse (171533561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 165335171 - 2²² = 161140867 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is equal to p_9256604 and since 165335171 and 9256604 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (165335111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82667585 + 82667586.

It is an arithmetic number, because the mean of its divisors is an integer number (82667586).

Almost surely, 2^165335171 is an apocalyptic number.

165335171 is a deficient number, since it is larger than the sum of its proper divisors (1).

165335171 is an equidigital number, since it uses as much as digits as its factorization.

165335171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9450, while the sum is 32.

The square root of 165335171 is about 12858.2724733924. The cubic root of 165335171 is about 548.8517875120.

The spelling of 165335171 in words is "one hundred sixty-five million, three hundred thirty-five thousand, one hundred seventy-one".