11051811 has 6 divisors (see below), whose sum is σ = 15963740. Its totient is φ = 7367868.

The previous prime is 11051809. The next prime is 11051827. The reversal of 11051811 is 11815011.

It is a happy number.

It is not a de Polignac number, because 11051811 - 2¹ = 11051809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11051801) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 613981 + ... + 613998.

Almost surely, 2^11051811 is an apocalyptic number.

11051811 is a deficient number, since it is larger than the sum of its proper divisors (4911929).

11051811 is a wasteful number, since it uses less digits than its factorization.

11051811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227985 (or 1227982 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 18.

The square root of 11051811 is about 3324.4264166921. The cubic root of 11051811 is about 222.7466338905.

Adding to 11051811 its reverse (11815011), we get a palindrome (22866822).

It can be divided in two parts, 1105 and 1811, that added together give a square (2916 = 54²).

The spelling of 11051811 in words is "eleven million, fifty-one thousand, eight hundred eleven".