224432561 has 2 divisors, whose sum is σ = 224432562. Its totient is φ = 224432560.

The previous prime is 224432543. The next prime is 224432563. The reversal of 224432561 is 165234422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128686336 + 95746225 = 11344^2 + 9785^2 .

It is a cyclic number.

It is not a de Polignac number, because 224432561 - 2⁶ = 224432497 is a prime.

Together with 224432563, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (224432563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112216280 + 112216281.

It is an arithmetic number, because the mean of its divisors is an integer number (112216281).

Almost surely, 2^224432561 is an apocalyptic number.

It is an amenable number.

224432561 is a deficient number, since it is larger than the sum of its proper divisors (1).

224432561 is an equidigital number, since it uses as much as digits as its factorization.

224432561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 29.

The square root of 224432561 is about 14981.0734261601. The cubic root of 224432561 is about 607.7084685931.

Adding to 224432561 its reverse (165234422), we get a palindrome (389666983).

The spelling of 224432561 in words is "two hundred twenty-four million, four hundred thirty-two thousand, five hundred sixty-one".