Vishnu sahasranamam, slok64

Slok64:        Anivarthee  Nivrutthaathma   Samkshepthaa  Kshemakrucchivaha
                      Sreevathsa vakshAha, SreevAsaha  Sreepathihi  SreemathAm varaha

The Unsolvable Universal Principle,  Uncompetabl Atma of Salvation, the Comprisable, the doer of Welfare, the  Siva, the one has an emblem of  "Sreevathsa" on his chest, the Consort of Sree Maha Lakshmi Devi(the godess of fortune), the Best Auspicious one, isSree Maha Vishnu.  

"Nivruttathma" is the salient name, in this slok, which explains a broad meaning of VISHNU. Here , Vishnu  is addressed  as  " Atma", which grants "Nivrutthi". Nivrutthi means "Salvation". Salvation is a state of no return.
When a soul enters the field of Salvation, that escapes from the cycle of births. Hence, one should pray Lord Vishnu, the Nivrutthatma, to attain Salvation.  

Vishnu is of all auspescious features. Vishnu is the Lord of LAKSHMI, the  goddess  of  Fortune. So, Goddess Lakshmi is Vishnu and Vishnu is Goddess Lakshmi. These two Devine entities work together for the same cause, i.e ,the welfare of the universe.
"Sree" means auspesciousness or fortune. That's why, VISHNU is named as
"SreemAn". The man of Sree.

Om Vishnave namaha