The "97th Number" typically refers to the 97th element on the periodic table, which is berkelium. Berkelium is a synthetic element, meaning it is not found naturally and must be created in a laboratory. It was first discovered in 1949 by a team of scientists at the University of California, Berkeley, and is named after the city. Berkelium is classified as an actinide and has the atomic number 97. It is radioactive and has no significant commercial applications, primarily being used for research purposes. Its most stable isotope, berkelium-247, has a half-life of about 1,380 years, making it useful for certain scientific studies.