1159997 has 2 divisors, whose sum is σ = 1159998. Its totient is φ = 1159996.

The previous prime is 1159993. The next prime is 1160009. The reversal of 1159997 is 7999511.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 942841 + 217156 = 971^2 + 466^2 .

It is a cyclic number.

It is not a de Polignac number, because 1159997 - 2² = 1159993 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1159993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 579998 + 579999.

It is an arithmetic number, because the mean of its divisors is an integer number (579999).

2^1159997 is an apocalyptic number.

It is an amenable number.

1159997 is a deficient number, since it is larger than the sum of its proper divisors (1).

1159997 is an equidigital number, since it uses as much as digits as its factorization.

1159997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25515, while the sum is 41.

The square root of 1159997 is about 1077.0315687110. The cubic root of 1159997 is about 105.0716668707.

The spelling of 1159997 in words is "one million, one hundred fifty-nine thousand, nine hundred ninety-seven".