55255793920 has 288 divisors, whose sum is σ = 143503516800. Its totient is φ = 20320616448.

The previous prime is 55255793911. The next prime is 55255793941. The reversal of 55255793920 is 2939755255.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 139183162 + ... + 139183558.

It is an arithmetic number, because the mean of its divisors is an integer number (498276100).

Almost surely, 2^55255793920 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 55255793920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71751758400).

55255793920 is an abundant number, since it is smaller than the sum of its proper divisors (88247722880).

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

55255793920 is a wasteful number, since it uses less digits than its factorization.

55255793920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593 (or 579 counting only the distinct ones).

The product of its (nonzero) digits is 4252500, while the sum is 52.

The spelling of 55255793920 in words is "fifty-five billion, two hundred fifty-five million, seven hundred ninety-three thousand, nine hundred twenty".