The number 197 is a three-digit integer that follows 196 and precedes 198. It is classified as a prime number, meaning it has no positive divisors other than 1 and itself. This characteristic makes it significant in number theory and mathematics. In the context of mathematics, 197 can be expressed in various forms, such as binary (11000101) or hexadecimal (C5). It is also used in different applications, including coding systems and algorithms, where prime numbers play a crucial role in ensuring data security and integrity.