Last week's number one - The Secret Life of Pets - dropped to number two with takings of $29.3m (£22.3m).
Ghostbusters and Lights Out both took $21.6m (£16.4m) - making the two films tied in third place.
Ice Age: Collision Course debuted at number five with $21m (£15.9m), considerably lower than the previous films in the children's series.
All four of the animated movie's predecessors debuted with at least $40m (£30.4m) on their opening weekends.
