11256191 has 2 divisors, whose sum is σ = 11256192. Its totient is φ = 11256190.

The previous prime is 11256173. The next prime is 11256199. The reversal of 11256191 is 19165211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11256191 - 2¹⁴ = 11239807 is a prime.

It is a Sophie Germain prime.

It is a zygodrome in base 4.

It is a self number, because there is not a number n which added to its sum of digits gives 11256191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11256199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5628095 + 5628096.

It is an arithmetic number, because the mean of its divisors is an integer number (5628096).

Almost surely, 2^11256191 is an apocalyptic number.

11256191 is a deficient number, since it is larger than the sum of its proper divisors (1).

11256191 is an equidigital number, since it uses as much as digits as its factorization.

11256191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 540, while the sum is 26.

The square root of 11256191 is about 3355.0247391040. The cubic root of 11256191 is about 224.1113325708. Note that the first 3 decimals are identical.

The spelling of 11256191 in words is "eleven million, two hundred fifty-six thousand, one hundred ninety-one".