/usr/lib/linux-tools/3.16.0-41-lowlatency/cpupower is in linux-tools-3.16.0-41-lowlatency 3.16.0-41.57~14.04.1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/linux-tools/3.16.0-41-lowlatency/../../linux-lts-utopic-tools-3.16.0-41/cpupower