55325491200 has 720 divisors, whose sum is σ = 229881194400. Its totient is φ = 12457082880.

The previous prime is 55325491181. The next prime is 55325491223. The reversal of 55325491200 is 219452355.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (720).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 825753567 + ... + 825753633.

Almost surely, 2^55325491200 is an apocalyptic number.

55325491200 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 55325491200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114940597200).

55325491200 is an abundant number, since it is smaller than the sum of its proper divisors (174555703200).

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

55325491200 is an frugal number, since it uses more digits than its factorization.

55325491200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128 (or 84 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The spelling of 55325491200 in words is "fifty-five billion, three hundred twenty-five million, four hundred ninety-one thousand, two hundred".