11530289 has 2 divisors, whose sum is σ = 11530290. Its totient is φ = 11530288.

The previous prime is 11530279. The next prime is 11530297. The reversal of 11530289 is 98203511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11336689 + 193600 = 3367^2 + 440^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11530289 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11530219) 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 as a sum of consecutive naturals, namely, 5765144 + 5765145.

It is an arithmetic number, because the mean of its divisors is an integer number (5765145).

Almost surely, 2^11530289 is an apocalyptic number.

It is an amenable number.

11530289 is a deficient number, since it is larger than the sum of its proper divisors (1).

11530289 is an equidigital number, since it uses as much as digits as its factorization.

11530289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 11530289 is about 3395.6279242579. The cubic root of 11530289 is about 225.9158652548.

The spelling of 11530289 in words is "eleven million, five hundred thirty thousand, two hundred eighty-nine".