11085811 has 4 divisors (see below), whose sum is σ = 12093624. Its totient is φ = 10078000.

The previous prime is 11085803. The next prime is 11085847. The reversal of 11085811 is 11858011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11858011 = 11 ⋅1078001.

It is a cyclic number.

It is not a de Polignac number, because 11085811 - 2³ = 11085803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11085881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 503890 + ... + 503911.

It is an arithmetic number, because the mean of its divisors is an integer number (3023406).

Almost surely, 2^11085811 is an apocalyptic number.

11085811 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11085811 is a deficient number, since it is larger than the sum of its proper divisors (1007813).

11085811 is a wasteful number, since it uses less digits than its factorization.

11085811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007812.

The product of its (nonzero) digits is 320, while the sum is 25.

The square root of 11085811 is about 3329.5361538809. The cubic root of 11085811 is about 222.9748207007.

The spelling of 11085811 in words is "eleven million, eighty-five thousand, eight hundred eleven".