Checkers

Check if a number is a perfect square. Such as, Is 10000 a perfect square?

Check if the number is a triangle number. Such as, Is 150 a triangular number

Check if the number is a Mersenne number or a Mersenne prime. Such as, Is 255 a Mersenne number?

Check if two numbers are compatible numbers. Such as, Are 24 and 28 compatible numbers?

Check if the number is a palindrome number, for exampe: Is 313 a palindrome number?

Check if two numbers are betrothed numbers. Such as, Are 140 and 195 betrothed numbers?

Check if two numbers are amicable numbers, for exampe: Are 220 and 248 amicable numbers?

Check if the number is a deficient number. Such as, Is 15 a deficient number?

Verify whether the number is an abundant number, for exampe: Is 60 an abundant number?

Check if the number is a semiperfect number. Such as, Is 20 a semiperfect number?

Verify if the number is a perfect number, for exampe: Is 28 a perfect number?

Check if a given set of numbers is a Pythagorean triple. Such as, Are 14, 48 and 49 is a Pythagorean triple?