All the divisors of 1441 are palindromic (A062687): 1, 11, 131, and 1441.
1441 is a palindrome with exactly two prime factors (A046328).
1441 is a palindrome in base 10 and in base 6 (10401) (A029963).
1441 is a star number (or centered dodecagonal number) (A003154).
1441 is a concentric hexagonal number (A032528).
1441 is a number n such that 6n + 1, 12n + 1, and 18n + 1 are all primes (A046025).
Source: What's Special About This Number?
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