11557279 has 2 divisors, whose sum is σ = 11557280. Its totient is φ = 11557278.

The previous prime is 11557267. The next prime is 11557289. The reversal of 11557279 is 97275511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11557279 - 2⁷ = 11557151 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11557289) 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, 5778639 + 5778640.

It is an arithmetic number, because the mean of its divisors is an integer number (5778640).

Almost surely, 2^11557279 is an apocalyptic number.

11557279 is a deficient number, since it is larger than the sum of its proper divisors (1).

11557279 is an equidigital number, since it uses as much as digits as its factorization.

11557279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22050, while the sum is 37.

The square root of 11557279 is about 3399.5998293917. The cubic root of 11557279 is about 226.0920018560.

The spelling of 11557279 in words is "eleven million, five hundred fifty-seven thousand, two hundred seventy-nine".