57375

Appears in sequences

• Palindromes with exactly 7 prime factors (counted with multiplicity).at n=4A046333
• Numbers n such that 115*2^n-1 is prime.at n=25A050583
• a(1) = 5, a(n+1) is the smallest multiple of a(n) using only prime digits (2,3,5,7).at n=5A078234
• Terms in A046034 which are pairwise products of terms in A046034.at n=38A153446
• Deficient numbers n having a companion m > n such that sigma(n)/n = sigma(m)/m.at n=34A212608
• Number of 0..n arrays of length 5 with each element unequal to at least one neighbor, starting with 0.at n=14A221464
• Palindromes greater than 10 whose sum of proper divisors is also a palindrome greater than 10.at n=12A227228
• Each term is a palindrome such that the sum of its proper divisors is a palindrome > 1.at n=16A227947
• Integers of the form 8k+7 that can be written as a sum of four distinct squares of the form m, m+2, m+4, m+5, where m == 1 (mod 4).at n=29A243579
• Palindromes in base 10 that are also palindromes in base 60.at n=19A262069
• Numbers that begin a run of 3 consecutive odd valued terms in A360519.at n=15A361112
• G.f. A(x) satisfies A(x) = 1/(1 - x*A(x)^3 - x^2*A(x)^2*A'(x)).at n=6A385801