165126271 has 2 divisors, whose sum is σ = 165126272. Its totient is φ = 165126270.

The previous prime is 165126233. The next prime is 165126277. The reversal of 165126271 is 172621561.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165126271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165126277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82563135 + 82563136.

It is an arithmetic number, because the mean of its divisors is an integer number (82563136).

Almost surely, 2^165126271 is an apocalyptic number.

165126271 is a deficient number, since it is larger than the sum of its proper divisors (1).

165126271 is an equidigital number, since it uses as much as digits as its factorization.

165126271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 31.

The square root of 165126271 is about 12850.1467306798. The cubic root of 165126271 is about 548.6205331045.

The spelling of 165126271 in words is "one hundred sixty-five million, one hundred twenty-six thousand, two hundred seventy-one".