Often, numbered RAR files are used for hardware updates or device drivers.

It may be a numbered resource file for a specific application or game mod.

"56002.rar" appears to be a compressed file . Because it is a binary file container rather than a plain document, I cannot read the "text" inside it directly without knowing more about its origin or purpose.

"56002" is a pincode for areas in Bengaluru, India (specifically the Bengaluru G.P.O. area); the file might contain data related to that region.