165115583 has 2 divisors, whose sum is σ = 165115584. Its totient is φ = 165115582.

The previous prime is 165115547. The next prime is 165115591. The reversal of 165115583 is 385511561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 165115583 - 2²⁴ = 148338367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165112583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82557791 + 82557792.

It is an arithmetic number, because the mean of its divisors is an integer number (82557792).

Almost surely, 2^165115583 is an apocalyptic number.

165115583 is a deficient number, since it is larger than the sum of its proper divisors (1).

165115583 is an equidigital number, since it uses as much as digits as its factorization.

165115583 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18000, while the sum is 35.

The square root of 165115583 is about 12849.7308532125. The cubic root of 165115583 is about 548.6086961373.

It can be divided in two parts, 16511558 and 3, that added together give a palindrome (16511561).

The spelling of 165115583 in words is "one hundred sixty-five million, one hundred fifteen thousand, five hundred eighty-three".