224004561 has 16 divisors (see below), whose sum is σ = 326472960. Its totient is φ = 135490320.

The previous prime is 224004559. The next prime is 224004601. The reversal of 224004561 is 165400422.

It is not a de Polignac number, because 224004561 - 2¹ = 224004559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (224004161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10770 + ... + 23748.

It is an arithmetic number, because the mean of its divisors is an integer number (20404560).

Almost surely, 2^224004561 is an apocalyptic number.

It is an amenable number.

224004561 is a deficient number, since it is larger than the sum of its proper divisors (102468399).

224004561 is a wasteful number, since it uses less digits than its factorization.

224004561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13516.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 224004561 is about 14966.7819186357. The cubic root of 224004561 is about 607.3219163359.

Adding to 224004561 its reverse (165400422), we get a palindrome (389404983).

The spelling of 224004561 in words is "two hundred twenty-four million, four thousand, five hundred sixty-one".