1161397 has 2 divisors, whose sum is σ = 1161398. Its totient is φ = 1161396.

The previous prime is 1161371. The next prime is 1161401. The reversal of 1161397 is 7931611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1153476 + 7921 = 1074^2 + 89^2 .

It is an emirp because it is prime and its reverse (7931611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1161397 - 2⁷ = 1161269 is a prime.

It is a plaindrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1161317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 580698 + 580699.

It is an arithmetic number, because the mean of its divisors is an integer number (580699).

2^1161397 is an apocalyptic number.

It is an amenable number.

1161397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1161397 is an equidigital number, since it uses as much as digits as its factorization.

1161397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1134, while the sum is 28.

The square root of 1161397 is about 1077.6813072518. The cubic root of 1161397 is about 105.1139201969.

The spelling of 1161397 in words is "one million, one hundred sixty-one thousand, three hundred ninety-seven".