5561220 has 48 divisors (see below), whose sum is σ = 17797248. Its totient is φ = 1271040.

The previous prime is 5561219. The next prime is 5561221. The reversal of 5561220 is 221655.

It is an interprime number because it is at equal distance from previous prime (5561219) and next prime (5561221).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (5561221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6201 + ... + 7040.

It is an arithmetic number, because the mean of its divisors is an integer number (370776).

Almost surely, 2^5561220 is an apocalyptic number.

It is an amenable number.

5561220 is an abundant number, since it is smaller than the sum of its proper divisors (12236028).

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

5561220 is a wasteful number, since it uses less digits than its factorization.

5561220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13260 (or 13258 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 5561220 is about 2358.2239079443. The cubic root of 5561220 is about 177.1699347885.

Adding to 5561220 its reverse (221655), we get a palindrome (5782875).

The spelling of 5561220 in words is "five million, five hundred sixty-one thousand, two hundred twenty".