11161291 has 2 divisors, whose sum is σ = 11161292. Its totient is φ = 11161290.

The previous prime is 11161289. The next prime is 11161301. The reversal of 11161291 is 19216111.

It is a weak prime.

It is an emirp because it is prime and its reverse (19216111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11161291 - 2¹ = 11161289 is a prime.

Together with 11161289, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11161091) 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, 5580645 + 5580646.

It is an arithmetic number, because the mean of its divisors is an integer number (5580646).

Almost surely, 2^11161291 is an apocalyptic number.

11161291 is a deficient number, since it is larger than the sum of its proper divisors (1).

11161291 is an equidigital number, since it uses as much as digits as its factorization.

11161291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108, while the sum is 22.

The square root of 11161291 is about 3340.8518374810. The cubic root of 11161291 is about 223.4797329757.

The spelling of 11161291 in words is "eleven million, one hundred sixty-one thousand, two hundred ninety-one".