55547856000 has 1536 divisors, whose sum is σ = 256236664320. Its totient is φ = 11645337600.

The previous prime is 55547855971. The next prime is 55547856097. The reversal of 55547856000 is 65874555.

55547856000 is a `hidden beast` number, since 55 + 547 + 8 + 56 + 0 + 0 + 0 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 353807922 + ... + 353808078.

It is an arithmetic number, because the mean of its divisors is an integer number (166820745).

Almost surely, 2^55547856000 is an apocalyptic number.

55547856000 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 55547856000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128118332160).

55547856000 is an abundant number, since it is smaller than the sum of its proper divisors (200688808320).

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

55547856000 is a wasteful number, since it uses less digits than its factorization.

55547856000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221 (or 187 counting only the distinct ones).

The product of its (nonzero) digits is 840000, while the sum is 45.

The spelling of 55547856000 in words is "fifty-five billion, five hundred forty-seven million, eight hundred fifty-six thousand".