1135997 has 2 divisors, whose sum is σ = 1135998. Its totient is φ = 1135996.

The previous prime is 1135969. The next prime is 1135999. The reversal of 1135997 is 7995311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 894916 + 241081 = 946^2 + 491^2 .

It is a cyclic number.

It is not a de Polignac number, because 1135997 - 2²⁰ = 87421 is a prime.

Together with 1135999, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1135999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 567998 + 567999.

It is an arithmetic number, because the mean of its divisors is an integer number (567999).

2^1135997 is an apocalyptic number.

It is an amenable number.

1135997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1135997 is an equidigital number, since it uses as much as digits as its factorization.

1135997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8505, while the sum is 35.

The square root of 1135997 is about 1065.8316002071. The cubic root of 1135997 is about 104.3419770750.

The spelling of 1135997 in words is "one million, one hundred thirty-five thousand, nine hundred ninety-seven".