5531156220 has 48 divisors (see below), whose sum is σ = 15847413120. Its totient is φ = 1440672576.

The previous prime is 5531156149. The next prime is 5531156231. The reversal of 5531156220 is 226511355.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1069350 + ... + 1074509.

It is an arithmetic number, because the mean of its divisors is an integer number (330154440).

Almost surely, 2^5531156220 is an apocalyptic number.

It is an amenable number.

5531156220 is an abundant number, since it is smaller than the sum of its proper divisors (10316256900).

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

5531156220 is a wasteful number, since it uses less digits than its factorization.

5531156220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2143914 (or 2143912 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 5531156220 is about 74371.7434245023. The cubic root of 5531156220 is about 1768.5009939350.

Adding to 5531156220 its reverse (226511355), we get a palindrome (5757667575).

The spelling of 5531156220 in words is "five billion, five hundred thirty-one million, one hundred fifty-six thousand, two hundred twenty".