5520531640 has 128 divisors (see below), whose sum is σ = 14134176000. Its totient is φ = 1925941248.

The previous prime is 5520531617. The next prime is 5520531641. The reversal of 5520531640 is 461350255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5520531641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 704866 + ... + 712654.

It is an arithmetic number, because the mean of its divisors is an integer number (110423250).

Almost surely, 2^5520531640 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 5520531640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7067088000).

5520531640 is an abundant number, since it is smaller than the sum of its proper divisors (8613644360).

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

5520531640 is a wasteful number, since it uses less digits than its factorization.

5520531640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7889 (or 7885 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 5520531640 is about 74300.2802148148. The cubic root of 5520531640 is about 1767.3679201785.

Adding to 5520531640 its reverse (461350255), we get a palindrome (5981881895).

The spelling of 5520531640 in words is "five billion, five hundred twenty million, five hundred thirty-one thousand, six hundred forty".