11557289 has 2 divisors, whose sum is σ = 11557290. Its totient is φ = 11557288.

The previous prime is 11557279. The next prime is 11557303. The reversal of 11557289 is 98275511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7075600 + 4481689 = 2660^2 + 2117^2 .

It is a cyclic number.

It is not a de Polignac number, because 11557289 - 2¹² = 11553193 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11557279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5778644 + 5778645.

It is an arithmetic number, because the mean of its divisors is an integer number (5778645).

Almost surely, 2^11557289 is an apocalyptic number.

It is an amenable number.

11557289 is a deficient number, since it is larger than the sum of its proper divisors (1).

11557289 is an equidigital number, since it uses as much as digits as its factorization.

11557289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25200, while the sum is 38.

The square root of 11557289 is about 3399.6013001527. The cubic root of 11557289 is about 226.0920670651.

The spelling of 11557289 in words is "eleven million, five hundred fifty-seven thousand, two hundred eighty-nine".