It isn't standard in the US, although at some point I memorized them to prepare for buzzer races in math competitions. It was in no way reflective of anything useful in real life, but it was fun.

There were a few sets of common numbers, formulas, and mental calculation tricks that were useful to just always have in the back of your head. Perfect squares and cubes under 1000, powers of 2 and 3, prime numbers below 100, interior angles of regular polygons up to 10 sides, binomial coefficients, Pythagorean triples, factorials up to 9!, common roots out to 3-4 decimal places, and a few others that I've no longer needed for almost 20 years at this point.