1224550289 has 2 divisors, whose sum is σ = 1224550290. Its totient is φ = 1224550288.

The previous prime is 1224550219. The next prime is 1224550309. The reversal of 1224550289 is 9820554221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 807696400 + 416853889 = 28420^2 + 20417^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1224550289 is a prime.

It is a super-3 number, since 3×1224550289³ (a number of 28 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1224550219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612275144 + 612275145.

It is an arithmetic number, because the mean of its divisors is an integer number (612275145).

Almost surely, 2^1224550289 is an apocalyptic number.

It is an amenable number.

1224550289 is a deficient number, since it is larger than the sum of its proper divisors (1).

1224550289 is an equidigital number, since it uses as much as digits as its factorization.

1224550289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 57600, while the sum is 38.

The square root of 1224550289 is about 34993.5749674137. The cubic root of 1224550289 is about 1069.8565298073.

The spelling of 1224550289 in words is "one billion, two hundred twenty-four million, five hundred fifty thousand, two hundred eighty-nine".