513513

Appears in sequences

• Odd abundant numbers not divisible by 5.at n=12A064001
• Numbers k dividing every cyclic permutation of k^3.at n=40A242680
• Numbers n such that the result of n multiplied by the reversal of n can be split into two numbers a and b of equal length (if the length is odd a leading zero is allowed), where a + b equals n (b can also have a leading zero).at n=33A259316
• a(n) is the least integer that can be expressed as the difference of two heptagonal numbers in exactly n ways.at n=12A334036
• Odd abundant numbers that are also doublets (cf. A020338).at n=24A380232
• Odd abundant numbers not divisible by 5 that are also doublets (cf. A020338).at n=10A380233