54557221578 has 8 divisors (see below), whose sum is σ = 109114443168. Its totient is φ = 18185740524.

The previous prime is 54557221577. The next prime is 54557221637. The reversal of 54557221578 is 87512275545.

It is a sphenic number, since it is the product of 3 distinct primes.

54557221578 is an admirable number.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 54557221578.

It is not an unprimeable number, because it can be changed into a prime (54557221571) 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 3 ways as a sum of consecutive naturals, for example, 4546435126 + ... + 4546435137.

It is an arithmetic number, because the mean of its divisors is an integer number (13639305396).

Almost surely, 2^54557221578 is an apocalyptic number.

54557221578 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

54557221578 is a wasteful number, since it uses less digits than its factorization.

54557221578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9092870268.

The product of its digits is 3920000, while the sum is 51.

The spelling of 54557221578 in words is "fifty-four billion, five hundred fifty-seven million, two hundred twenty-one thousand, five hundred seventy-eight".