1224655559 has 2 divisors, whose sum is σ = 1224655560. Its totient is φ = 1224655558.

The previous prime is 1224655541. The next prime is 1224655591. The reversal of 1224655559 is 9555564221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1224655559 - 2⁸ = 1224655303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1224655759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612327779 + 612327780.

It is an arithmetic number, because the mean of its divisors is an integer number (612327780).

Almost surely, 2^1224655559 is an apocalyptic number.

1224655559 is a deficient number, since it is larger than the sum of its proper divisors (1).

1224655559 is an equidigital number, since it uses as much as digits as its factorization.

1224655559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 540000, while the sum is 44.

The square root of 1224655559 is about 34995.0790683490. The cubic root of 1224655559 is about 1069.8871861146.

The spelling of 1224655559 in words is "one billion, two hundred twenty-four million, six hundred fifty-five thousand, five hundred fifty-nine".