5631544224 has 96 divisors (see below), whose sum is σ = 16516543680. Its totient is φ = 1866758400.

The previous prime is 5631544223. The next prime is 5631544279. The reversal of 5631544224 is 4224451365.

5631544224 is a `hidden beast` number, since 563 + 1 + 54 + 42 + 2 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (5631544223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138379 + ... + 174389.

It is an arithmetic number, because the mean of its divisors is an integer number (172047330).

Almost surely, 2^5631544224 is an apocalyptic number.

5631544224 is a gapful number since it is divisible by the number (54) 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 5631544224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8258271840).

5631544224 is an abundant number, since it is smaller than the sum of its proper divisors (10884999456).

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

5631544224 is a wasteful number, since it uses less digits than its factorization.

5631544224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36211 (or 36197 counting only the distinct ones).

The product of its digits is 115200, while the sum is 36.

The square root of 5631544224 is about 75043.6154779339. The cubic root of 5631544224 is about 1779.1360769964.

Adding to 5631544224 its reverse (4224451365), we get a palindrome (9855995589).

The spelling of 5631544224 in words is "five billion, six hundred thirty-one million, five hundred forty-four thousand, two hundred twenty-four".