The number 181 is an integer that follows 180 and precedes 182. It is an odd number and can be expressed as the sum of two prime numbers: 181 = 73 + 108. In mathematics, it is also classified as a composite number because it has divisors other than one and itself. In terms of its significance, 181 is often used in various contexts, such as in mathematics, science, and even in addressing systems. For example, it can represent a specific location, a code, or a reference number in different fields.