uid 1 super user - what is is for There is Drupal super user with uid = 1. I was trying to find out what is so special about this account and what activities will require this account. Is it necessary to have access to this account for Drupal page administration. I would like to know a list of thing that will require super user access. I would also like to know what is so special about this account. As far as I know there can be only one super user in Drupal.
The Drupal user with uid = 1 is created by Drupal during the installation process of Drupal. User 1 bypasses all access callbacks in the system by default -- he can see/do anything.

Beyond that it is a typical Drupal user. If you want to secure the "admin" or uid=1 user please refer to this documentation page: Securing user #1 on steps you can take to secure the usage of the uid=1 user.