1001197 has 2 divisors, whose sum is σ = 1001198. Its totient is φ = 1001196.

The previous prime is 1001191. The next prime is 1001219. The reversal of 1001197 is 7911001.

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., 509796 + 491401 = 714^2 + 701^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001197 - 2⁷ = 1001069 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500598 + 500599.

It is an arithmetic number, because the mean of its divisors is an integer number (500599).

2^1001197 is an apocalyptic number.

It is an amenable number.

1001197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001197 is an equidigital number, since it uses as much as digits as its factorization.

1001197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63, while the sum is 19.

The square root of 1001197 is about 1000.5983210060. The cubic root of 1001197 is about 100.0398840905.

Adding to 1001197 its reverse (7911001), we get a palindrome (8912198).

The spelling of 1001197 in words is "one million, one thousand, one hundred ninety-seven".