55055551120 has 160 divisors (see below), whose sum is σ = 140031037440. Its totient is φ = 20073984000.

The previous prime is 55055551073. The next prime is 55055551121. The reversal of 55055551120 is 2115555055.

It is a super-2 number, since 2×55055551120² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55055551121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2939385 + ... + 2958055.

It is an arithmetic number, because the mean of its divisors is an integer number (875193984).

Almost surely, 2^55055551120 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 55055551120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70015518720).

55055551120 is an abundant number, since it is smaller than the sum of its proper divisors (84975486320).

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

55055551120 is a wasteful number, since it uses less digits than its factorization.

55055551120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18785 (or 18779 counting only the distinct ones).

The product of its (nonzero) digits is 31250, while the sum is 34.

The spelling of 55055551120 in words is "fifty-five billion, fifty-five million, five hundred fifty-one thousand, one hundred twenty".