iPhone app showing "1" near app icon

I have created a new iPhone app using object c (no phonegap etc.). When I am installing it on iPhone 5 / iPhone 6 (iOS8), it is showing a "1" on the top right corner of the app icon immediately after its installation. May I know reason for this and how can I remove this ?

The app uses push notifications. But, immediately after installation, there is no notification for the app.

Thanks,

Madhu