55five55 is a square pyramidal number. 55 is: . the 10th Fibonacci number [1] and the 10th triangular number, [2] The sum of 55's dits is also 10.; the 5th heptagonal number, [3] the 5th squareCARA MAIN 55FIVE AGAR TIDAK LOSS,MENGGUNAKAN CARA KOMPENSASI!!! Halo sobat Vasaners !!! Untuk bermain di situs ini tentunya mempunyai resiko