5220454440 has 128 divisors (see below), whose sum is σ = 17202585600. Its totient is φ = 1261497600.

The previous prime is 5220454433. The next prime is 5220454457. The reversal of 5220454440 is 444540225.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 5220454398 and 5220454407.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2665 + ... + 102215.

It is an arithmetic number, because the mean of its divisors is an integer number (134395200).

Almost surely, 2^5220454440 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 5220454440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8601292800).

5220454440 is an abundant number, since it is smaller than the sum of its proper divisors (11982131160).

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

5220454440 is a wasteful number, since it uses less digits than its factorization.

5220454440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99607 (or 99603 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 30.

The square root of 5220454440 is about 72252.7123366313. The cubic root of 5220454440 is about 1734.7468330340.

Adding to 5220454440 its reverse (444540225), we get a palindrome (5664994665).

The spelling of 5220454440 in words is "five billion, two hundred twenty million, four hundred fifty-four thousand, four hundred forty".