5511321 has 10 divisors (see below), whose sum is σ = 8233082. Its totient is φ = 3674160.

The previous prime is 5511313. The next prime is 5511347. The reversal of 5511321 is 1231155.

It can be written as a sum of positive squares in only one way, i.e., 5475600 + 35721 = 2340^2 + 189^2 .

It is not a de Polignac number, because 5511321 - 2³ = 5511313 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 5511294 and 5511303.

It is not an unprimeable number, because it can be changed into a prime (5512321) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 33940 + ... + 34101.

Almost surely, 2^5511321 is an apocalyptic number.

It is an amenable number.

5511321 is a deficient number, since it is larger than the sum of its proper divisors (2721761).

5511321 is an equidigital number, since it uses as much as digits as its factorization.

5511321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68053 (or 68044 counting only the distinct ones).

The product of its digits is 150, while the sum is 18.

The square root of 5511321 is about 2347.6202844583. The cubic root of 5511321 is about 176.6384461074.

Adding to 5511321 its reverse (1231155), we get a palindrome (6742476).

It can be divided in two parts, 5511 and 321, that added together give a cube (5832 = 18³).

The spelling of 5511321 in words is "five million, five hundred eleven thousand, three hundred twenty-one".