If you install from repository you might getting version 4.4.X

if you want the latest you have to do some manual work:

Tested on Debian8.7:
Linux debian 3.16.0-4-686-pae #1 SMP Debian 3.16.39-1+deb8u2 (2017-03-07) i686 GNU/Linux

su; # become root

# download
wget https://ftp.fau.de/tdf/libreoffice/stable/5.3.2/deb/x86/LibreOffice_5.3.2_Linux_x86_deb.tar.gz; #
wget https://ftp.fau.de/tdf/libreoffice/stable/5.3.2/deb/x86/LibreOffice_5.3.2_Linux_x86_deb_langpack_de.tar.gz; # language pack for German (English is default language)

tar fxvz LibreOffice_5.3.2_Linux_x86_deb.tar.gz; # unpack
tar fxvz LibreOffice_5.3.2_Linux_x86_deb_langpack_de.tar.gz;

# you will have a large amounts of *.deb now

dpkg -i LibreOffice_5.3.2_Linux_x86_deb/DEBS/*; # install LibreOffice
dpkg -i LibreOffice_5.3.2_Linux_x86_deb_langpack_de/DEBS/*; # install German Language pack