578151

Appears in sequences

• Pentagonal numbers (A000326) whose digit reversal is a powerful(1) number (A001694).at n=7A115696
• a(n) = H(n-1, n, n+1) where H(a, b, c) = (a + b + c)*(a + b - c)*(b + c - a)*(c + a - b) is Heron's polynomial.at n=21A339488