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. (August 2012)
||one thousand seven hundred one
(one thousand seven hundred first)
||1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 1701
1701 is the natural number preceding 1702 and following 1700.
1701 is an odd number and a Stirling number of the second kind.
The number 1701 also has unusual properties as it:
- belongs to a set of numbers such that contains exactly seven different digits.
- is a decagonal and a 13-gonal number.
- is divisible by the square of the sum of its digits.
- belongs to a set of numbers with only palindromic prime factors whose sum is palindromic.
- is a First Beale cipher.
- belongs to a set of numbers whose digits of prime factors are either 3 or 7.
- its reversal digit sequence (1071) is divisible by 7.
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