The deaths were mainly civilians but include police officers and soldiers.
The president announced the toll in an emergency meeting with former Nigerian leaders aimed at finding ways to end the unrest, his spokesman told the BBC.
A group that has been key in organising the demonstrations has now urged people to stay at home.
The Feminist Coalition also advised people to follow any curfews in place in their states.
The protests have drastically subsided but an uneasy calm remains in several cities.