55655

Appears in sequences

• Palindromic in bases 4 and 10.at n=14A029961
• Near-repdigit semiprimes with 5 as repeated digit.at n=36A105986
• Numbers which have only digits 5 and 6 in base 10.at n=34A256291
• a(n) = 5*(10^(2*n+1)-1)/9 + 10^n.at n=2A332156