55057211120 has 20 divisors (see below), whose sum is σ = 128008016040. Its totient is φ = 22022884416.

The previous prime is 55057211093. The next prime is 55057211149. The reversal of 55057211120 is 2111275055.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

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, 344107490 + ... + 344107649.

It is an arithmetic number, because the mean of its divisors is an integer number (6400400802).

Almost surely, 2^55057211120 is an apocalyptic number.

It is an amenable number.

55057211120 is an abundant number, since it is smaller than the sum of its proper divisors (72950804920).

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

55057211120 is a wasteful number, since it uses less digits than its factorization.

55057211120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688215152 (or 688215146 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 29.

Adding to 55057211120 its reverse (2111275055), we get a palindrome (57168486175).

The spelling of 55057211120 in words is "fifty-five billion, fifty-seven million, two hundred eleven thousand, one hundred twenty".