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BaseRepresentation
bin10001001001
31111122
4101021
513342
65025
73125
oct2111
91448
101097
11908
12775
13665
14585
154d2
hex449

1097 has 2 divisors, whose sum is σ = 1098. Its totient is φ = 1096.

The previous prime is 1093. The next prime is 1103. The reversal of 1097 is 7901.

Adding to 1097 its reverse (7901), we get a palindrome (8998).

1097 is nontrivially palindromic in base 14.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 841 + 256 = 29^2 + 16^2 .

It is an emirp because it is prime and its reverse (7901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1097 - 22 = 1093 is a prime.

It is a Chen prime.

1097 is an undulating number in base 14.

It is a plaindrome in base 3, base 9 and base 16.

It is a nialpdrome in base 8, base 12 and base 13.

It is a zygodrome in base 3.

It is not a weakly prime, because it can be changed into another prime (1091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 548 + 549.

It is an arithmetic number, because the mean of its divisors is an integer number (549).

It is an amenable number.

1097 is a deficient number, since it is larger than the sum of its proper divisors (1).

1097 is an equidigital number, since it uses as much as digits as its factorization.

1097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63, while the sum is 17.

The square root of 1097 is about 33.1209903234. The cubic root of 1097 is about 10.3134082457.

The spelling of 1097 in words is "one thousand, ninety-seven".