165701171 has 2 divisors, whose sum is σ = 165701172. Its totient is φ = 165701170.

The previous prime is 165701119. The next prime is 165701183. The reversal of 165701171 is 171107561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 165701171 - 2¹⁴ = 165684787 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (165701671) 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, 82850585 + 82850586.

It is an arithmetic number, because the mean of its divisors is an integer number (82850586).

Almost surely, 2^165701171 is an apocalyptic number.

165701171 is a deficient number, since it is larger than the sum of its proper divisors (1).

165701171 is an equidigital number, since it uses as much as digits as its factorization.

165701171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1470, while the sum is 29.

The square root of 165701171 is about 12872.4966886770. The cubic root of 165701171 is about 549.2564840382.

The spelling of 165701171 in words is "one hundred sixty-five million, seven hundred one thousand, one hundred seventy-one".