224165 has 8 divisors (see below), whose sum is σ = 272160. Its totient is φ = 177232.

The previous prime is 224153. The next prime is 224171. The reversal of 224165 is 561422.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 224165 - 2⁴ = 224149 is a prime.

It is a nialpdrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 326 + ... + 744.

It is an arithmetic number, because the mean of its divisors is an integer number (34020).

2²²⁴¹⁶⁵ is an apocalyptic number.

It is an amenable number.

224165 is a deficient number, since it is larger than the sum of its proper divisors (47995).

224165 is a wasteful number, since it uses less digits than its factorization.

224165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531.

The product of its digits is 480, while the sum is 20.

The square root of 224165 is about 473.4606636248. The cubic root of 224165 is about 60.7466875985.

Adding to 224165 its reverse (561422), we get a palindrome (785587).

The spelling of 224165 in words is "two hundred twenty-four thousand, one hundred sixty-five".