Samsung Galaxy Note Edge has a pixel density of:
539.08

A.K.A. SGNE, Galaxy Note 4 Edge
Released: 2014

Resolution: 2560×1600 5.6″ display

Wide QXGA (WQXGA) 2560×1600, 8:5 aspect ratio

Totaling 4.10mp (megapixels) and having a PPI of 539.08

Category: Phone
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Samsung Galaxy Note Edge

Samsung Galaxy Note Edge in White
Manufacturer	Samsung Electronics
Slogan	The Edge Of Brilliance
Series	Galaxy Note
First released	14 November 2014; 4 years ago (2014-11-14)
Predecessor	Samsung Galaxy Round
Successor	Samsung Galaxy Note 5
Related	Samsung Galaxy Note 4
Type	Capacitive touchscreen smartphone
Form factor	Slate, phablet
Dimensions	International & Korea Variant : 82.4 x 151.3 x 8.3 mm Japan Variant : 82 x 151 x 8.5 mm
Mass	International & Korea Variant : 174 g Japan Variant : 177 g
Operating system	Android (operating system) Original: Android 4.4 “KitKat” Current: Android 6.0 “Marshmallow”[1]
System on chip	Samsung Exynos 5 Octa 5433 (South Korea version) Qualcomm Snapdragon 805 (international version)
CPU	Quad-core 1.3 GHz Cortex-A53 & quad-core 1.9 GHz Cortex-A57 (South Korea version) 2.7 GHz Krait 450 quad-core (international version)
GPU	ARM Mali T760 GPU (South Korea version) Adreno 420 (international version)
Memory	3 GB LPDDR3
Storage	32/64 GB flash memory
Removable storage	microSDXC up to 128 GB
Battery	3000 mAh
Data inputs	List Multi-touch touch screen 3 push buttons Headset controls Proximity sensor Ambient light sensors 3-axis gyroscope Magnetometer Accelerometer Barometer Hall effect sensor Hygrometer Magnetometer Gesture sensor aGPS GLONASS BeiDou RGB light sensor S Pen (stylus)/pen
Display	142 mm (5.6 in) Super AMOLED 524 ppi 2560×1600 16:10 aspect ratio
Rear camera	16-megapixel, with autofocus, BSI, 1080p and 4K video recording
Front camera	3.7 megapixel
Connectivity	List Wi-Fi: 802.11 a/b/g/n/ac (2.4, or 5 GHz) Wi-Fi Direct Wi-Fi hotspot DLNA Miracast GPS/GLONASS/BeiDou NFC Bluetooth 4.1 Infrared USB 2.0 micro-B port USB OTG 1.3 MHL 3.0 HDMI (TV-out, via MHL A\V link) 3.5 millimetres (0.14 in) headphone jack
Website	Official website

This righthand infobox courtesy of Wikipedia.