500055521550 has 96 divisors (see below), whose sum is σ = 1335880519008. Its totient is φ = 123058552320.

The previous prime is 500055521503. The next prime is 500055521551. The reversal of 500055521550 is 55125550005.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (500055521551) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7950024 + ... + 8012676.

It is an arithmetic number, because the mean of its divisors is an integer number (13915422073).

Almost surely, 2^500055521550 is an apocalyptic number.

500055521550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 500055521550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (667940259504).

500055521550 is an abundant number, since it is smaller than the sum of its proper divisors (835824997458).

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

500055521550 is a wasteful number, since it uses less digits than its factorization.

500055521550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66774 (or 66769 counting only the distinct ones).

The product of its (nonzero) digits is 31250, while the sum is 33.

The spelling of 500055521550 in words is "five hundred billion, fifty-five million, five hundred twenty-one thousand, five hundred fifty".