5531221300 has 72 divisors (see below), whose sum is σ = 13229153280. Its totient is φ = 1990579200.

The previous prime is 5531221291. The next prime is 5531221331. The reversal of 5531221300 is 31221355.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80781 + ... + 132619.

It is an arithmetic number, because the mean of its divisors is an integer number (183738240).

Almost surely, 2^5531221300 is an apocalyptic number.

5531221300 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5531221300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6614576640).

5531221300 is an abundant number, since it is smaller than the sum of its proper divisors (7697931980).

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

5531221300 is a wasteful number, since it uses less digits than its factorization.

5531221300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51961 (or 51954 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 5531221300 is about 74372.1809549781. The cubic root of 5531221300 is about 1768.5079300130.

Adding to 5531221300 its reverse (31221355), we get a palindrome (5562442655).

Subtracting from 5531221300 its reverse (31221355), we obtain a palindrome (5499999945).

The spelling of 5531221300 in words is "five billion, five hundred thirty-one million, two hundred twenty-one thousand, three hundred".