Yes. 45 is an integer.
45 is a composite integer.
a negative integer
45 is real, rational, whole, natural, odd, composite, and an integer.
45 is an integer which is a rational number. So the question makes no sense.
Indeed, 45 is a composite number. Its positive integer factors are 1, 3, 5, 9, 15, 45.
45 is an integer - neither a proper nor a mixed fraction.
If you mean 45 then it is a composite number because it has more than two factors
A real, positive number; an integer between 43 and 45.
45 is an integer, not a fraction.
It is any number of the form 45*n where n is an integer.