2017

2017 is a prime number.

2017 is 11111100001 in binary.

2017 is a central polygonal number: a number of the form k(k + 1)/2 + 1, where k = 63 (A000124). It is the maximum number of pieces of a circular pizza that you can make with 63 straight cuts.

2017, (2017 + 1)/2 = 1009, and (2017 + 2)/3 = 673 are all primes (A036570).

2017 = 502 + 504 + 505 + 506 (the sum of four consecutive composite numbers) (A060329). 2017 is also the sum of eight consecutive composite numbers (A060333).

2017 is a generalized canyon prime (A183087).

2017 is a year with 53 Sundays, according to the Gregorian calendar (A242593).

2017 has been designated by the United Nations as the International Year of Sustainable Tourism for Development.

2017 is Canada's 150th anniversary of Confederation.