224445 has 16 divisors (see below), whose sum is σ = 387072. Its totient is φ = 110400.

The previous prime is 224443. The next prime is 224449. The reversal of 224445 is 544422.

It is not a de Polignac number, because 224445 - 2¹ = 224443 is a prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 381 + ... + 770.

It is an arithmetic number, because the mean of its divisors is an integer number (24192).

2²²⁴⁴⁴⁵ is an apocalyptic number.

It is an amenable number.

224445 is a deficient number, since it is larger than the sum of its proper divisors (162627).

224445 is a wasteful number, since it uses less digits than its factorization.

224445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172.

The product of its digits is 1280, while the sum is 21.

The square root of 224445 is about 473.7562664493. The cubic root of 224445 is about 60.7719695642.

Adding to 224445 its reverse (544422), we get a palindrome (768867).

The spelling of 224445 in words is "two hundred twenty-four thousand, four hundred forty-five".