224444561 has 16 divisors (see below), whose sum is σ = 251164800. Its totient is φ = 198844800.

The previous prime is 224444501. The next prime is 224444569. The reversal of 224444561 is 165444422.

It is a de Polignac number, because none of the positive numbers 2^k-224444561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (224444569) 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, 67895 + ... + 71123.

It is an arithmetic number, because the mean of its divisors is an integer number (15697800).

Almost surely, 2^224444561 is an apocalyptic number.

It is an amenable number.

224444561 is a deficient number, since it is larger than the sum of its proper divisors (26720239).

224444561 is a wasteful number, since it uses less digits than its factorization.

224444561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3400.

The product of its digits is 30720, while the sum is 32.

The square root of 224444561 is about 14981.4739261529. The cubic root of 224444561 is about 607.7192994215.

Adding to 224444561 its reverse (165444422), we get a palindrome (389888983).

The spelling of 224444561 in words is "two hundred twenty-four million, four hundred forty-four thousand, five hundred sixty-one".