4.5 is not an integer.
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Yes, 45 is an integer number. An integer is a whole number that can be positive, negative, or zero, and it does not have any decimal or fractional parts. In this case, 45 is a positive whole number, making it an integer.
[ 45 N ] where 'N' is any integer.
45 is real, rational, whole, natural, odd, composite, and an integer.
45
45 cannot be divided by 10 to provide an integer answer. 45/10 = 4.5.