The number 1 is unique in many ways, and holds a fascinating position in the world of mathematics, science, and culture.. For example, 7 = 1 + 1 + 1 + 1 + 1 + 1 + 1.
It is the first and smallest positive integer of the infinite sequence of natural numbers.. The number 1 symbolized unity and the origin of all things, since all other numbers can be created from 1 by adding enough copies of it.