2615
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Number
$2615$ (two thousand, six hundred and fifteen) is:
- $5 \times 523$
- Has the property that its reversal multiplied by $11$ equals the reversal of its product with $11$:
- $2615 \times 11 = 28 \, 765$; $5162 \times 11 = 56 \, 782$
- Simply used by David Wells in his Curious and Interesting Numbers as a canonical example of such a number.
- Nothing to see here, move along now.
Also see
Sources
- 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $2615$
- 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $2615$