Adding to 11155 its reverse (55111), we get a palindrome (66266).
Subtracting 11155 from its reverse (55111), we obtain a triangular number (43956 = T296).
11155 is nontrivially palindromic in base 7.
11155 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a 8-Lehmer number, since φ(11155) divides (11155-1)8.
It is a cyclic number.
It is a nude number because it is divisible by every one of its digits.
It is a Duffinian number.
It is a plaindrome in base 10 and base 15.
It is a nialpdrome in base 11.
It is a zygodrome in base 10.
211155 is an apocalyptic number.
11155 is an equidigital number, since it uses as much as digits as its factorization.
11155 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 125.
The square root of 11155 is about 105.6172334423. The cubic root of 11155 is about 22.3437737379.
The spelling of 11155 in words is "eleven thousand, one hundred fifty-five".