If you consider personal responsibility, living your life so that no man is responsible for you and you are responsible for no man, the concept of productivity and the use of one's mind to it's fullest potential, regardless of what you are told to feel otherwise, a cult. Then yes, she has a cult following. They are called, thinkers and doers. Try to survive life without them.
There is nothing that Ayn Rand has stated that the bible does not cover better.