224465 has 4 divisors (see below), whose sum is σ = 269364. Its totient is φ = 179568.

The previous prime is 224461. The next prime is 224467. The reversal of 224465 is 564422.

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 99856 + 124609 = 316^2 + 353^2 .

It is a cyclic number.

It is not a de Polignac number, because 224465 - 2² = 224461 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 224465.

It is not an unprimeable number, because it can be changed into a prime (224461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22442 + ... + 22451.

It is an arithmetic number, because the mean of its divisors is an integer number (67341).

2²²⁴⁴⁶⁵ is an apocalyptic number.

It is an amenable number.

224465 is a deficient number, since it is larger than the sum of its proper divisors (44899).

224465 is an equidigital number, since it uses as much as digits as its factorization.

224465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44898.

The product of its digits is 1920, while the sum is 23.

The square root of 224465 is about 473.7773738793. Note that the first 3 decimals coincide. The cubic root of 224465 is about 60.7737746141.

Adding to 224465 its reverse (564422), we get a palindrome (788887).

The spelling of 224465 in words is "two hundred twenty-four thousand, four hundred sixty-five".