A number is said to be Disarium if the sum of its digits raised to their respective positions is the number itself.
Create a function that determines whether a number is a Disarium or not.
isDisarium(75) ➞ false
// 7^1 + 5^2 = 7 + 25 = 32
isDisarium(135) ➞ true
// 1^1 + 3^2 + 5^3 = 1 + 9 + 125 = 135
isDisarium(544) ➞ false
isDisarium(518) ➞ true
isDisarium(8) ➞ true
isDisarium(466) ➞ false