11091187 has 2 divisors, whose sum is σ = 11091188. Its totient is φ = 11091186.

The previous prime is 11091181. The next prime is 11091229. The reversal of 11091187 is 78119011.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11091187 - 2¹¹ = 11089139 is a prime.

It is not a weakly prime, because it can be changed into another prime (11091181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5545593 + 5545594.

It is an arithmetic number, because the mean of its divisors is an integer number (5545594).

Almost surely, 2^11091187 is an apocalyptic number.

11091187 is a deficient number, since it is larger than the sum of its proper divisors (1).

11091187 is an equidigital number, since it uses as much as digits as its factorization.

11091187 is an evil number, because the sum of its binary digits is even.

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

The square root of 11091187 is about 3330.3433756897. The cubic root of 11091187 is about 223.0108583263.

The spelling of 11091187 in words is "eleven million, ninety-one thousand, one hundred eighty-seven".