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11597 has 2 divisors, whose sum is σ = 11598. Its totient is φ = 11596.

The previous prime is 11593. The next prime is 11617. The reversal of 11597 is 79511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11236 + 361 = 106^2 + 19^2 .

It is a cyclic number.

It is not a de Polignac number, because 11597 - 22 = 11593 is a prime.

It is a Chen prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 11597.

It is not a weakly prime, because it can be changed into another prime (11593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5798 + 5799.

It is an arithmetic number, because the mean of its divisors is an integer number (5799).

211597 is an apocalyptic number.

It is an amenable number.

11597 is a deficient number, since it is larger than the sum of its proper divisors (1).

11597 is an equidigital number, since it uses as much as digits as its factorization.

11597 is an evil number, because the sum of its binary digits is even.

The product of its digits is 315, while the sum is 23.

The square root of 11597 is about 107.6893680917. The cubic root of 11597 is about 22.6350722834.

It can be divided in two parts, 115 and 97, that added together give a palindrome (212).

The spelling of 11597 in words is "eleven thousand, five hundred ninety-seven".