55200055140 has 432 divisors, whose sum is σ = 185592476160. Its totient is φ = 13261501440.

The previous prime is 55200055111. The next prime is 55200055151. The reversal of 55200055140 is 4155000255.

55200055140 is a `hidden beast` number, since 55 + 20 + 0 + 0 + 551 + 40 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 134963256 + ... + 134963664.

Almost surely, 2^55200055140 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 55200055140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92796238080).

55200055140 is an abundant number, since it is smaller than the sum of its proper divisors (130392421020).

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

55200055140 is a wasteful number, since it uses less digits than its factorization.

55200055140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560 (or 536 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 27.

Adding to 55200055140 its reverse (4155000255), we get a palindrome (59355055395).

The spelling of 55200055140 in words is "fifty-five billion, two hundred million, fifty-five thousand, one hundred forty".