After Bruno Mars took his track "Locked Out of Heaven" to No. 1 on the Billboard Hot 100, it became his fifth Pop Songs No. 1. That tied him with Nelly and Justin Timberlake for the most leaders among solo males.

Here's a look at the male soloists with the most No. 1s since 1992:

5--Bruno Mars

5--Nelly

5--Justin Timberlake

4--Flo Rida

3--Chris Brown

3--Eminem

3--Ludacris

3--Timbaland

3--Kanye West

Katy Perry and Rihanna lead all artists with nine Pop Songs No. 1s each.