55548443520 has 512 divisors, whose sum is σ = 202412390400. Its totient is φ = 14391336960.

The previous prime is 55548443473. The next prime is 55548443539. The reversal of 55548443520 is 2534484555.

55548443520 is a `hidden beast` number, since 5 + 5 + 5 + 4 + 84 + 43 + 520 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 119974809 + ... + 119975271.

It is an arithmetic number, because the mean of its divisors is an integer number (395336700).

Almost surely, 2^55548443520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55548443520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101206195200).

55548443520 is an abundant number, since it is smaller than the sum of its proper divisors (146863946880).

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

55548443520 is a wasteful number, since it uses less digits than its factorization.

55548443520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675 (or 657 counting only the distinct ones).

The product of its (nonzero) digits is 1920000, while the sum is 45.

The spelling of 55548443520 in words is "fifty-five billion, five hundred forty-eight million, four hundred forty-three thousand, five hundred twenty".