5511220 has 96 divisors (see below), whose sum is σ = 14224896. Its totient is φ = 1766400.

The previous prime is 5511203. The next prime is 5511223. The reversal of 5511220 is 221155.

It is a junction number, because it is equal to n+sod(n) for n = 5511194 and 5511203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5511223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 117237 + ... + 117283.

It is an arithmetic number, because the mean of its divisors is an integer number (148176).

Almost surely, 2^5511220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5511220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7112448).

5511220 is an abundant number, since it is smaller than the sum of its proper divisors (8713676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5511220 is a wasteful number, since it uses less digits than its factorization.

5511220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 5511220 is about 2347.5987732149. The cubic root of 5511220 is about 176.6373670804.

Adding to 5511220 its reverse (221155), we get a palindrome (5732375).

It can be divided in two parts, 551 and 1220, that multiplied together give a triangular number (672220 = T₁₁₅₉).

The spelling of 5511220 in words is "five million, five hundred eleven thousand, two hundred twenty".