Sūrah No. 32, Revealed in Makkah, 30 verses.
The Sūrah is also known as Alif-lām-mīm Sajdah to differentiate it from Sūrat Hā-mīm Sajdah (Sūrah No.41).
The Sūrah gets its name from the fact that it has a wājib sajdah in verse 15. It is one of the four Sūrahs that have wājib sajdah. These four Sūrahs are known as al-‘Azā’im and they are Sūrahs No. 32, 41, 53 and 96.