37 is a prime number.
A prime number is defined as a natural number greater than 1 that has no positive divisors other than 1 and itself. In the case of 37, its only divisors are 1 and 37. This means it cannot be divided evenly by any other numbers, confirming its status as a prime number.
On the other hand, a composite number is a natural number that has more than two distinct positive divisors. Since 37 does not meet this criterion, it cannot be classified as composite.