These are sequence numbers. They suggest that this image is part of a large set (e.g., image number 24 or 157 in a series).
For example:
While no specific "report" exists under this exact title, the components often appear in the following contexts: lsm cd ss olivia 024 157 jpg upd
"Olivia" and the numbers "024" and "157" likely refer to a specific person and frame/image numbers within a larger set. These are sequence numbers