165000271 has 2 divisors, whose sum is σ = 165000272. Its totient is φ = 165000270.

The previous prime is 165000217. The next prime is 165000281. The reversal of 165000271 is 172000561.

Together with previous prime (165000217) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (172000561) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165000271 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165000211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82500135 + 82500136.

It is an arithmetic number, because the mean of its divisors is an integer number (82500136).

Almost surely, 2^165000271 is an apocalyptic number.

165000271 is a deficient number, since it is larger than the sum of its proper divisors (1).

165000271 is an equidigital number, since it uses as much as digits as its factorization.

165000271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 165000271 is about 12845.2431273215. The cubic root of 165000271 is about 548.4809555224.

The spelling of 165000271 in words is "one hundred sixty-five million, two hundred seventy-one", and thus it is an aban number.