165066523 has 2 divisors, whose sum is σ = 165066524. Its totient is φ = 165066522.

The previous prime is 165066479. The next prime is 165066527. The reversal of 165066523 is 325660561.

It is a strong prime.

It is an emirp because it is prime and its reverse (325660561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 165066523 - 2¹³ = 165058331 is a prime.

It is not a weakly prime, because it can be changed into another prime (165066527) 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, 82533261 + 82533262.

It is an arithmetic number, because the mean of its divisors is an integer number (82533262).

Almost surely, 2^165066523 is an apocalyptic number.

165066523 is a deficient number, since it is larger than the sum of its proper divisors (1).

165066523 is an equidigital number, since it uses as much as digits as its factorization.

165066523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 165066523 is about 12847.8217219885. The cubic root of 165066523 is about 548.5543555994.

The spelling of 165066523 in words is "one hundred sixty-five million, sixty-six thousand, five hundred twenty-three".