5581695

Appears in sequences

• Odd primitive abundant numbers of the form (2*P)^2+2*P+p^2 with P and p primes and p^2<4*P.at n=3A133778
• Odd primitive abundant numbers n such that n = x^2 + x + y^2 with y^2 < 2*x; a subsequence of A006038.at n=23A136476