It is 56.
56/4 = 14, a whole number.
Yes.
55.64 to the nearest whole number = 56
56 is a rational whole natural number. Or to put it another way: 56 is a Natural number, but as all natural numbers are also whole numbers 56 is also a whole number, but as all whole numbers are also rational numbers 56 is also a rational number. Natural numbers are a [proper] subset of whole numbers; Whole numbers are a [proper] subset of rational numbers. The set of rational numbers along with the set of irrational numbers make up the set of real numbers
56
No.
5.5 to the nearest whole number = 6
56
It is 56.
56
Yes.