Adding to 546 its sum of digits (15), we get a triangular number (561 = T33).
Adding to 546 its product of digits (120), we get a palindrome (666).
Subtracting 546 from its reverse (645), we obtain a palindrome (99).
546 is nontrivially palindromic in base 4, base 9 and base 16.
It is an Ulam number.
546 is an undulating number in base 3, base 4 and base 5.
It is a Curzon number.
546 is a nontrivial repdigit in base 9 and base 16.
It is a plaindrome in base 9, base 11, base 15 and base 16.
It is a nialpdrome in base 9, base 13 and base 16.
It is a zygodrome in base 9 and base 16.
It is a congruent number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 546.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
546 is a wasteful number, since it uses less digits than its factorization.
546 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 25.
The square root of 546 is about 23.3666428911. The cubic root of 546 is about 8.1733020256.
The spelling of 546 in words is "five hundred forty-six", and thus it is an aban number.