56207

Properties

Appears in sequences

• Least prime p of a quartet of 4 distinct primes {p, p+2, q, q+2} such that each digit of q is the same as the corresponding digit of p except that each 6 in p corresponds to a 9 in q and vice versa.at n=8A122712
• Primes of the form n + sum of proper non-divisors of n.at n=36A192560
• Consider a number x. Take the sum of its digits. Repeat the process deleting the first addendum and adding the previous sum. The sequence lists the numbers that after some iterations reach the sum of the divisors of x.at n=12A269308
• Quasi-Repfigit numbers (or Quasi-Keith numbers).at n=21A319746
• Prime numbersat n=5702