55055545552 has 80 divisors (see below), whose sum is σ = 127034012160. Its totient is φ = 22615133184.

The previous prime is 55055545543. The next prime is 55055545577. The reversal of 55055545552 is 25554555055.

It is a super-2 number, since 2×55055545552² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 383113 + ... + 506839.

It is an arithmetic number, because the mean of its divisors is an integer number (1587925152).

Almost surely, 2^55055545552 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 55055545552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63517006080).

55055545552 is an abundant number, since it is smaller than the sum of its proper divisors (71978466608).

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

55055545552 is a wasteful number, since it uses less digits than its factorization.

55055545552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123908 (or 123902 counting only the distinct ones).

The product of its (nonzero) digits is 3125000, while the sum is 46.

The spelling of 55055545552 in words is "fifty-five billion, fifty-five million, five hundred forty-five thousand, five hundred fifty-two".