55043221300 has 36 divisors (see below), whose sum is σ = 119545184556. Its totient is φ = 21998598400.

The previous prime is 55043221283. The next prime is 55043221319. The reversal of 55043221300 is 312234055.

55043221300 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 7132140304 + 47911080996 = 84452^2 + 218886^2 .

It is a super-2 number, since 2×55043221300² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 114937 + ... + 351136.

It is an arithmetic number, because the mean of its divisors is an integer number (3320699571).

Almost surely, 2^55043221300 is an apocalyptic number.

55043221300 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55043221300 is an abundant number, since it is smaller than the sum of its proper divisors (64501963256).

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

55043221300 is a wasteful number, since it uses less digits than its factorization.

55043221300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467268 (or 467261 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

Adding to 55043221300 its reverse (312234055), we get a palindrome (55355455355).

The spelling of 55043221300 in words is "fifty-five billion, forty-three million, two hundred twenty-one thousand, three hundred".