It's early day yet but What Make You Beautiful is gaining radio airplay on Top 40.
Top 40 is a the most popular radio format and it plays mostly pop. In America, there are 154 such stations.
March 1: #47 with 672 spins (# of spins = # of radio airplay counted on a weekly basis)
March 2: #43 with 790 spins
March 3: #40 with 877 spins
March 4: #40 with 1,027 spins
March 5: #33 with 1,166 spins
March 6: #31 with 1,277 spins
As you can see, What Make You Beautiful is gaining more radio airplay and therefore rising on the pop radio chart. #31 = the 31st most played song on pop radio station.
FYI: #1 (Adele's Set Fire To the Rain) has over 13,000 spins on pop.