55331603244100 has 72 divisors (see below), whose sum is σ = 121205022382080. Its totient is φ = 21923578682880.

The previous prime is 55331603244089. The next prime is 55331603244101. The reversal of 55331603244100 is 144230613355.

It is a self number, because there is not a number n which added to its sum of digits gives 55331603244100.

It is not an unprimeable number, because it can be changed into a prime (55331603244101) by changing a digit.

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, 17319681 + ... + 20264119.

It is an arithmetic number, because the mean of its divisors is an integer number (1683403088640).

Almost surely, 2^{55331603244100} is an apocalyptic number.

55331603244100 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 55331603244100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60602511191040).

55331603244100 is an abundant number, since it is smaller than the sum of its proper divisors (65873419137980).

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

55331603244100 is a wasteful number, since it uses less digits than its factorization.

55331603244100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2946229 (or 2946222 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 37.

Adding to 55331603244100 its reverse (144230613355), we get a palindrome (55475833857455).

The spelling of 55331603244100 in words is "fifty-five trillion, three hundred thirty-one billion, six hundred three million, two hundred forty-four thousand, one hundred".