51375

Appears in sequences

• Numbers not ending in 0 which are the product of two substrings of themselves. The substrings may be equal, but each must be greater than 1.at n=10A066217
• Visible factor numbers (VFNs): composite numbers k with the property that every prime factor of k can be found in the decimal expansion of k and every digit of k can be covered by a prime factor.at n=4A083359
• a(n) = 76*n^2 - 1.at n=25A158765
• Conceited Numbers: Composite numbers that are a concatenation of their distinct prime factors with multiplicity in some order allowing overlap.at n=4A324257