11158811 has 2 divisors, whose sum is σ = 11158812. Its totient is φ = 11158810.

The previous prime is 11158799. The next prime is 11158837. The reversal of 11158811 is 11885111.

It is an a-pointer prime, because the next prime (11158837) can be obtained adding 11158811 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11158811 - 2¹⁰ = 11157787 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11158891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5579405 + 5579406.

It is an arithmetic number, because the mean of its divisors is an integer number (5579406).

Almost surely, 2^11158811 is an apocalyptic number.

11158811 is a deficient number, since it is larger than the sum of its proper divisors (1).

11158811 is an equidigital number, since it uses as much as digits as its factorization.

11158811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 320, while the sum is 26.

The square root of 11158811 is about 3340.4806540377. The cubic root of 11158811 is about 223.4631796100.

The spelling of 11158811 in words is "eleven million, one hundred fifty-eight thousand, eight hundred eleven".