11155271 has 2 divisors, whose sum is σ = 11155272. Its totient is φ = 11155270.

The previous prime is 11155267. The next prime is 11155273. The reversal of 11155271 is 17255111.

It is a strong prime.

It is an emirp because it is prime and its reverse (17255111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11155271 - 2² = 11155267 is a prime.

Together with 11155273, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11155273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5577635 + 5577636.

It is an arithmetic number, because the mean of its divisors is an integer number (5577636).

Almost surely, 2^11155271 is an apocalyptic number.

11155271 is a deficient number, since it is larger than the sum of its proper divisors (1).

11155271 is an equidigital number, since it uses as much as digits as its factorization.

11155271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 350, while the sum is 23.

The square root of 11155271 is about 3339.9507481399. The cubic root of 11155271 is about 223.4395467659.

The spelling of 11155271 in words is "eleven million, one hundred fifty-five thousand, two hundred seventy-one".