5631520 has 48 divisors (see below), whose sum is σ = 13546008. Its totient is φ = 2211840.

The previous prime is 5631499. The next prime is 5631523. The reversal of 5631520 is 251365.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4717584 + 913936 = 2172^2 + 956^2 .

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 5631491 and 5631500.

It is not an unprimeable number, because it can be changed into a prime (5631523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9472 + ... + 10048.

Almost surely, 2^5631520 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 5631520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6773004).

5631520 is an abundant number, since it is smaller than the sum of its proper divisors (7914488).

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

5631520 is a wasteful number, since it uses less digits than its factorization.

5631520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653 (or 645 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 5631520 is about 2373.0823837364. The cubic root of 5631520 is about 177.9133526017.

Adding to 5631520 its reverse (251365), we get a palindrome (5882885).

The spelling of 5631520 in words is "five million, six hundred thirty-one thousand, five hundred twenty".