165522263 has 2 divisors, whose sum is σ = 165522264. Its totient is φ = 165522262.

The previous prime is 165522241. The next prime is 165522307. The reversal of 165522263 is 362225561.

It is a weak prime.

It is an emirp because it is prime and its reverse (362225561) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165522263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165122263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82761131 + 82761132.

It is an arithmetic number, because the mean of its divisors is an integer number (82761132).

Almost surely, 2^165522263 is an apocalyptic number.

165522263 is a deficient number, since it is larger than the sum of its proper divisors (1).

165522263 is an equidigital number, since it uses as much as digits as its factorization.

165522263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 32.

The square root of 165522263 is about 12865.5455772385. The cubic root of 165522263 is about 549.0587349500.

The spelling of 165522263 in words is "one hundred sixty-five million, five hundred twenty-two thousand, two hundred sixty-three".