5521320 has 144 divisors (see below), whose sum is σ = 20940660. Its totient is φ = 1257984.

The previous prime is 5521309. The next prime is 5521361. The reversal of 5521320 is 231255.

It is a happy number.

5521320 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 4588164 + 933156 = 2142^2 + 966^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 5521293 and 5521302.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 17484 + ... + 17796.

Almost surely, 2^5521320 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 5521320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10470330).

5521320 is an abundant number, since it is smaller than the sum of its proper divisors (15419340).

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

5521320 is a wasteful number, since it uses less digits than its factorization.

5521320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344 (or 330 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 5521320 is about 2349.7489227575. The cubic root of 5521320 is about 176.7452045884.

Adding to 5521320 its reverse (231255), we get a palindrome (5752575).

The spelling of 5521320 in words is "five million, five hundred twenty-one thousand, three hundred twenty".