1297 has 2 divisors, whose sum is σ = 1298. Its totient is φ = 1296.
The previous prime is 1291. The next prime is 1301. The reversal of 1297 is 7921.
1297 is nontrivially palindromic in base 6 and base 11.
It is a Cunningham number, because it is equal to 64+1.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 1296 + 1 = 36^2 + 1^2 .
It is a cyclic number.
It is not a de Polignac number, because 1297 - 23 = 1289 is a prime.
It is a Chen prime.
1297 is an undulating number in base 11.
It is a plaindrome in base 13 and base 14.
It is a nialpdrome in base 16.
It is not a weakly prime, because it can be changed into another prime (1291) by changing a digit.
It is a Pierpont prime, being equal to 24 ⋅ 34 + 1.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 648 + 649.
It is an arithmetic number, because the mean of its divisors is an integer number (649).
It is an amenable number.
1297 is a deficient number, since it is larger than the sum of its proper divisors (1).
1297 is an equidigital number, since it uses as much as digits as its factorization.
1297 is an evil number, because the sum of its binary digits is even.
The product of its digits is 126, while the sum is 19.
The square root of 1297 is about 36.0138862107. The cubic root of 1297 is about 10.9055270345.
It can be divided in two parts, 129 and 7, that multiplied together give a triangular number (903 = T42).
The spelling of 1297 in words is "one thousand, two hundred ninety-seven".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.072 sec. • engine limits •