1115711 has 2 divisors, whose sum is σ = 1115712. Its totient is φ = 1115710.

The previous prime is 1115701. The next prime is 1115713. The reversal of 1115711 is 1175111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1115711 - 2¹⁴ = 1099327 is a prime.

It is a super-2 number, since 2×1115711² = 2489622071042, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 1115713, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1115711.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1115713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557855 + 557856.

It is an arithmetic number, because the mean of its divisors is an integer number (557856).

2^1115711 is an apocalyptic number.

1115711 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115711 is an equidigital number, since it uses as much as digits as its factorization.

1115711 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35, while the sum is 17.

The square root of 1115711 is about 1056.2722187012. The cubic root of 1115711 is about 103.7171493227.

The spelling of 1115711 in words is "one million, one hundred fifteen thousand, seven hundred eleven".