165272717 has 2 divisors, whose sum is σ = 165272718. Its totient is φ = 165272716.

The previous prime is 165272677. The next prime is 165272741. The reversal of 165272717 is 717272561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 162537001 + 2735716 = 12749^2 + 1654^2 .

It is a cyclic number.

It is not a de Polignac number, because 165272717 - 2¹⁶ = 165207181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165272777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82636358 + 82636359.

It is an arithmetic number, because the mean of its divisors is an integer number (82636359).

Almost surely, 2^165272717 is an apocalyptic number.

It is an amenable number.

165272717 is a deficient number, since it is larger than the sum of its proper divisors (1).

165272717 is an equidigital number, since it uses as much as digits as its factorization.

165272717 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41160, while the sum is 38.

The square root of 165272717 is about 12855.8436907112. The cubic root of 165272717 is about 548.7826707267.

The spelling of 165272717 in words is "one hundred sixty-five million, two hundred seventy-two thousand, seven hundred seventeen".