57125

Appears in sequences

• Truncated tetrahedral numbers: a(n) = (1/6)*(n+1)*(23*n^2 + 19*n + 6).at n=24A005906
• Numbers that can be written as the product of two divisors greater than 1 such that the number is contained in the string concatenation of the divisors.at n=43A355790
• Numbers k such that the equation x^2 - k*y^4 = -1 has a solution for which |y| > 2.at n=28A356488