197 is nontrivially palindromic in base 6 and base 14.
197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
197 is an esthetic number in base 14, because in such base it adjacent digits differ by 1.
It is a strong prime.
197 is a truncatable prime.
It is a cyclic number.
It is a Chen prime.
197 is a repfigit number.
It is an Ulam number.
197 is an undulating number in base 6 and base 14.
It is a plaindrome in base 9, base 11, base 12 and base 13.
It is a nialpdrome in base 15 and base 16.
It is a congruent number.
197 is the 8-th centered heptagonal number.
It is an amenable number.
197 is an equidigital number, since it uses as much as digits as its factorization.
197 is an evil number, because the sum of its binary digits is even.
The square root of 197 is about 14.0356688476. The cubic root of 197 is about 5.8186478675.
The spelling of 197 in words is "one hundred ninety-seven", and is thus an aban number.