1111897 has 2 divisors, whose sum is σ = 1111898. Its totient is φ = 1111896.

The previous prime is 1111867. The next prime is 1111921. The reversal of 1111897 is 7981111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 968256 + 143641 = 984^2 + 379^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1111897 is a prime.

It is not a weakly prime, because it can be changed into another prime (1111867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555948 + 555949.

It is an arithmetic number, because the mean of its divisors is an integer number (555949).

2^1111897 is an apocalyptic number.

It is an amenable number.

1111897 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111897 is an equidigital number, since it uses as much as digits as its factorization.

1111897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 504, while the sum is 28.

The square root of 1111897 is about 1054.4652673275. The cubic root of 1111897 is about 103.5988305051.

The spelling of 1111897 in words is "one million, one hundred eleven thousand, eight hundred ninety-seven".