text: what is numerology? is it essential for life?   numerology is the study of the purported mystical or esoteric relationship between numbers and the character or action of physical objects and living things.  numerology and numerological divination were popular among early mathematicians such as pythagoras, but are no longer considered to be part of mathematics and are now regarded as pseudomathematics by most mathematicians. this is similar to the historical development of astronomy from astrology, and that of chemistry from alchemy.