8224561 has 2 divisors, whose sum is σ = 8224562. Its totient is φ = 8224560.

The previous prime is 8224543. The next prime is 8224571. The reversal of 8224561 is 1654228.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6350400 + 1874161 = 2520^2 + 1369^2 .

It is a cyclic number.

It is not a de Polignac number, because 8224561 - 2⁵ = 8224529 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8224571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4112280 + 4112281.

It is an arithmetic number, because the mean of its divisors is an integer number (4112281).

Almost surely, 2^8224561 is an apocalyptic number.

It is an amenable number.

8224561 is a deficient number, since it is larger than the sum of its proper divisors (1).

8224561 is an equidigital number, since it uses as much as digits as its factorization.

8224561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3840, while the sum is 28.

The square root of 8224561 is about 2867.8495427759. The cubic root of 8224561 is about 201.8541001153.

Adding to 8224561 its reverse (1654228), we get a palindrome (9878789).

The spelling of 8224561 in words is "eight million, two hundred twenty-four thousand, five hundred sixty-one".