55004221513200 has 240 divisors, whose sum is σ = 176727049030656. Its totient is φ = 14623670476800.

The previous prime is 55004221513183. The next prime is 55004221513207. The reversal of 55004221513200 is 231512240055.

It is a tau number, because it is divible by the number of its divisors (240).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55004221513207) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4594783215 + ... + 4594795185.

Almost surely, 2^{55004221513200} is an apocalyptic number.

55004221513200 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 55004221513200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88363524515328).

55004221513200 is an abundant number, since it is smaller than the sum of its proper divisors (121722827517456).

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

55004221513200 is a wasteful number, since it uses less digits than its factorization.

55004221513200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23192 (or 23181 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 55004221513200 its reverse (231512240055), we get a palindrome (55235733753255).

The spelling of 55004221513200 in words is "fifty-five trillion, four billion, two hundred twenty-one million, five hundred thirteen thousand, two hundred".