1115911 has 2 divisors, whose sum is σ = 1115912. Its totient is φ = 1115910.

The previous prime is 1115899. The next prime is 1115923. The reversal of 1115911 is 1195111.

It is a balanced prime because it is at equal distance from previous prime (1115899) and next prime (1115923).

It is a cyclic number.

It is not a de Polignac number, because 1115911 - 2⁵ = 1115879 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 (1115941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557955 + 557956.

It is an arithmetic number, because the mean of its divisors is an integer number (557956).

2^1115911 is an apocalyptic number.

1115911 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115911 is an equidigital number, since it uses as much as digits as its factorization.

1115911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45, while the sum is 19.

The square root of 1115911 is about 1056.3668870236. The cubic root of 1115911 is about 103.7233463249.

The spelling of 1115911 in words is "one million, one hundred fifteen thousand, nine hundred eleven".