224045 has 4 divisors (see below), whose sum is σ = 268860. Its totient is φ = 179232.

The previous prime is 224041. The next prime is 224047. The reversal of 224045 is 540422.

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 119716 + 104329 = 346^2 + 323^2 .

It is a cyclic number.

It is not a de Polignac number, because 224045 - 2² = 224041 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224041) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 22400 + ... + 22409.

It is an arithmetic number, because the mean of its divisors is an integer number (67215).

2²²⁴⁰⁴⁵ is an apocalyptic number.

It is an amenable number.

224045 is a deficient number, since it is larger than the sum of its proper divisors (44815).

224045 is an equidigital number, since it uses as much as digits as its factorization.

224045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44814.

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 224045 is about 473.3339201874. Note that the first 3 decimals coincide. The cubic root of 224045 is about 60.7358460254.

Adding to 224045 its reverse (540422), we get a palindrome (764467).

The spelling of 224045 in words is "two hundred twenty-four thousand, forty-five".