Can you buy book royalties?

Can I inquire about the possibility of purchasing book royalties? I'm intrigued by the concept of investing in intellectual property, and I'm particularly interested in books that have a proven track record of success. Is it feasible to acquire royalties from such publications? How does the process work? Are there any legal or financial considerations I should be aware of? Additionally, what are the potential risks and rewards associated with investing in book royalties? I would greatly appreciate any insights you can provide.