1105 is nontrivially palindromic in base 2 and base 4.
1105 is an esthetic number in base 8, because in such base it adjacent digits differ by 1.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a 2-Lehmer number, since φ(1105) divides (1105-1)2.
It is a cyclic number.
It is a Carmichael number.
It is a Duffinian number.
1105 is an undulating number in base 8.
1105 is a lucky number.
It is a plaindrome in base 9 and base 14.
It is a congruent number.
It is a Poulet number, since it divides 21104-1.
21105 is an apocalyptic number.
1105 is the 17-th decagonal number.
1105 is the 24-th centered square number.
It is an amenable number.
1105 is a wasteful number, since it uses less digits than its factorization.
1105 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 35.
The square root of 1105 is about 33.2415402772. The cubic root of 1105 is about 10.3384181241.
The spelling of 1105 in words is "one thousand, one hundred five".