5565521500 has 192 divisors, whose sum is σ = 15567971328. Its totient is φ = 1687392000.

The previous prime is 5565521491. The next prime is 5565521501. The reversal of 5565521500 is 51255655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5565521501) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 1422547 + ... + 1426453.

It is an arithmetic number, because the mean of its divisors is an integer number (81083184).

Almost surely, 2^5565521500 is an apocalyptic number.

5565521500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5565521500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7783985664).

5565521500 is an abundant number, since it is smaller than the sum of its proper divisors (10002449828).

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

5565521500 is a wasteful number, since it uses less digits than its factorization.

5565521500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3981 (or 3969 counting only the distinct ones).

The product of its (nonzero) digits is 37500, while the sum is 34.

The square root of 5565521500 is about 74602.4228829064. The cubic root of 5565521500 is about 1772.1560223013.

The spelling of 5565521500 in words is "five billion, five hundred sixty-five million, five hundred twenty-one thousand, five hundred".