1097111 has 2 divisors, whose sum is σ = 1097112. Its totient is φ = 1097110.

The previous prime is 1097101. The next prime is 1097113. The reversal of 1097111 is 1117901.

It is a strong prime.

It is an emirp because it is prime and its reverse (1117901) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1097111 is a prime.

Together with 1097113, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1097113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 548555 + 548556.

It is an arithmetic number, because the mean of its divisors is an integer number (548556).

2^1097111 is an apocalyptic number.

1097111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1097111 is an equidigital number, since it uses as much as digits as its factorization.

1097111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63, while the sum is 20.

The square root of 1097111 is about 1047.4306659631. The cubic root of 1097111 is about 103.1375608820.

The spelling of 1097111 in words is "one million, ninety-seven thousand, one hundred eleven".