The series follows a multiplication pattern where each term is multiplied by increasing integers: 54 multiplied by 1 is 54, then 54 multiplied by 2 should be 108, 108 multiplied by 3 is 324, 324 multiplied by 4 is 1296, and 1296 multiplied by 5 is 6480. Based on this established pattern, the number 58 is the wrong term.