227165 has 4 divisors (see below), whose sum is σ = 272604. Its totient is φ = 181728.

The previous prime is 227159. The next prime is 227167. The reversal of 227165 is 561722.

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 174724 + 52441 = 418^2 + 229^2 .

It is a cyclic number.

It is not a de Polignac number, because 227165 - 2¹⁰ = 226141 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 227165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (227167) by changing a digit.

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, 22712 + ... + 22721.

It is an arithmetic number, because the mean of its divisors is an integer number (68151).

2²²⁷¹⁶⁵ is an apocalyptic number.

It is an amenable number.

227165 is a deficient number, since it is larger than the sum of its proper divisors (45439).

227165 is an equidigital number, since it uses as much as digits as its factorization.

227165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45438.

The product of its digits is 840, while the sum is 23.

The square root of 227165 is about 476.6182959140. The cubic root of 227165 is about 61.0164785723.

Adding to 227165 its reverse (561722), we get a palindrome (788887).

The spelling of 227165 in words is "two hundred twenty-seven thousand, one hundred sixty-five".