zero
No, there are infinitely many: all the natural numbers.
Depending on your definition of a natural number, 0 may or may not be a natural number. If you don't think 0 is a natural number, then it will be the only non-natural number that is whole.
Any negative whole number is not a natural number - so it is not "the only".
0 is the only number which is in the set of whole number but not in the natural number
A prime number (or a prime) is a natural number that has exactly two distinct natural number divisors: 1 and itself.
The number zero is a natural number and so, by the uniqueness of numbers, it is the only one that meets the requirements.
There is no such number.
All natural numbers (counting numbers) greater than one are either prime or composite. If divisible by only one and the number itself, it is prime; if divisible by other natural numbers, then is composite. One is the only natural number that is neither prime nor composite.
No, there are none.
No - the ONLY natural number which has a reciprocal which is also a natural number is "1". All the other reciprocals of natural numbers will be fractions that are less than 1.
A natural number.
prime number