497 is nontrivially palindromic in base 15 and base 16.
497 is an esthetic number in base 15, because in such base its adjacent digits differ by 1.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 794 = 2 ⋅397.
It is an Ulam number.
It is a Duffinian number.
497 is an undulating number in base 15 and base 16.
It is a plaindrome in base 12 and base 14.
It is a nialpdrome in base 8.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 497.
2497 is an apocalyptic number.
It is an amenable number.
497 is an equidigital number, since it uses as much as digits as its factorization.
497 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 78.
The square root of 497 is about 22.2934968096. The cubic root of 497 is about 7.9210993950.
The spelling of 497 in words is "four hundred ninety-seven", and thus it is an aban number.