5531220 has 48 divisors (see below), whose sum is σ = 17209920. Its totient is φ = 1474848.

The previous prime is 5531209. The next prime is 5531221. The reversal of 5531220 is 221355.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 5531193 and 5531202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5531221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4582 + ... + 5661.

It is an arithmetic number, because the mean of its divisors is an integer number (358540).

Almost surely, 2^5531220 is an apocalyptic number.

It is an amenable number.

5531220 is an abundant number, since it is smaller than the sum of its proper divisors (11678700).

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

5531220 is a wasteful number, since it uses less digits than its factorization.

5531220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10261 (or 10253 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 5531220 is about 2351.8545873417. The cubic root of 5531220 is about 176.8507791462.

Adding to 5531220 its reverse (221355), we get a palindrome (5752575).

The spelling of 5531220 in words is "five million, five hundred thirty-one thousand, two hundred twenty".