When you unarchive a tar file as root (using the tar command) it will write out the files with the original permissions and owner of the files as they were archived. Since you likely don't have a user or group with the userid and groupid set to 544 and 513 respectively, ls shows the numerical userid instead.
From the tar man page:
-p (x mode only) Preserve file permissions. Attempt to restore the
full permissions, including owner, file modes, file flags and
ACLs, if available, for each item extracted from the archive. By
default, newly-created files are owned by the user running tar,
the file mode is restored for newly-created regular files, and
all other types of entries receive default permissions. If tar
is being run by root, the default is to restore the owner unless
the -o option is also specified.