229165 has 4 divisors (see below), whose sum is σ = 275004. Its totient is φ = 183328.

The previous prime is 229157. The next prime is 229171. The reversal of 229165 is 561922.

229165 = 338² + 339².

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 114244 + 114921 = 338^2 + 339^2 .

It is a cyclic number.

It is not a de Polignac number, because 229165 - 2³ = 229157 is a prime.

It is a Duffinian number.

229165 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22912 + ... + 22921.

It is an arithmetic number, because the mean of its divisors is an integer number (68751).

2²²⁹¹⁶⁵ is an apocalyptic number.

229165 is the 339-th centered square number.

It is an amenable number.

229165 is a deficient number, since it is larger than the sum of its proper divisors (45839).

229165 is an equidigital number, since it uses as much as digits as its factorization.

229165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45838.

The product of its digits is 1080, while the sum is 25.

The square root of 229165 is about 478.7118130984. The cubic root of 229165 is about 61.1950221648.

The spelling of 229165 in words is "two hundred twenty-nine thousand, one hundred sixty-five".