5,400

[Math.]  Sum (in degrees) of all internal angles of a 32-side polygon.

 

5,418

[Math.]  Each ratio 37926/5418 = 7, using each of 9 digits 1-9 once, shows how to arrange a 9-book set on 2 shelves to mark the book #7.

 

5,440

[History]  The 1844 Democratic presidential candidate James K. Polk’s famous campaign slogan, “Fifty-Four Forty or Fight!”, referring to the conflict with Canada over the line of latitude serving as the northern boundary of Oregon state at 54o40’.

 

5,450

[Tech.]  The approximate temperature (oF) of an induction furnace.

 

5,455

[Math.]  54553 = 162,324,571,375 = (1623+2457+1375)3.

 

5,460

[Math.] A triangular number (sum of all integers from 1 to 104): 5460 = 1+2+…+103+104.