5511 has 8 divisors (see below), whose sum is σ = 8064. Its totient is φ = 3320.

The previous prime is 5507. The next prime is 5519. The reversal of 5511 is 1155.

5511 = T₂₆ + T₂₇ + ... + T₃₆.

5511 = 4² + 5² + ... + 25².

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5511 - 2² = 5507 is a prime.

It is a super-2 number, since 2×5511² = 60742242, which contains 22 as substring.

It is a plaindrome in base 13.

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51 + ... + 116.

It is an arithmetic number, because the mean of its divisors is an integer number (1008).

5511 is a deficient number, since it is larger than the sum of its proper divisors (2553).

5511 is a wasteful number, since it uses less digits than its factorization.

5511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181.

The product of its digits is 25, while the sum is 12.

The square root of 5511 is about 74.2361098119. The cubic root of 5511 is about 17.6635016679.

Adding to 5511 its reverse (1155), we get a palindrome (6666).

Subtracting from 5511 its reverse (1155), we obtain a square (4356 = 66²).

It can be divided in two parts, 55 and 11, that added together give a palindrome (66).

The spelling of 5511 in words is "five thousand, five hundred eleven".