Adding to 591 its sum of digits (15), we get a palindrome (606).
Subtracting from 591 its sum of digits (15), we obtain a square (576 = 242).
Adding to 591 its product of digits (45), we get a palindrome (636).
591 is nontrivially palindromic in base 14.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is a D-number.
591 is an undulating number in base 14.
591 is a lucky number.
It is a plaindrome in base 8, base 13 and base 16.
It is a nialpdrome in base 5.
It is a self number, because there is not a number n which added to its sum of digits gives 591.
It is a congruent number.
591 is a wasteful number, since it uses less digits than its factorization.
591 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 200.
The square root of 591 is about 24.3104915623. The cubic root of 591 is about 8.3919423867.
The spelling of 591 in words is "five hundred ninety-one", and thus it is an aban number.