5511811 has 2 divisors, whose sum is σ = 5511812. Its totient is φ = 5511810.

The previous prime is 5511809. The next prime is 5511817. The reversal of 5511811 is 1181155.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5511811 - 2¹ = 5511809 is a prime.

Together with 5511809, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (5511817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2755905 + 2755906.

It is an arithmetic number, because the mean of its divisors is an integer number (2755906).

Almost surely, 2^5511811 is an apocalyptic number.

5511811 is a deficient number, since it is larger than the sum of its proper divisors (1).

5511811 is an equidigital number, since it uses as much as digits as its factorization.

5511811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 200, while the sum is 22.

The square root of 5511811 is about 2347.7246431385. The cubic root of 5511811 is about 176.6436808036.

Adding to 5511811 its reverse (1181155), we get a palindrome (6692966).

The spelling of 5511811 in words is "five million, five hundred eleven thousand, eight hundred eleven".