5181224 has 32 divisors (see below), whose sum is σ = 10368000. Its totient is φ = 2420352.

The previous prime is 5181223. The next prime is 5181251. The reversal of 5181224 is 4221815.

It is a self number, because there is not a number n which added to its sum of digits gives 5181224.

It is not an unprimeable number, because it can be changed into a prime (5181223) 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, 13337 + ... + 13719.

It is an arithmetic number, because the mean of its divisors is an integer number (324000).

Almost surely, 2^5181224 is an apocalyptic number.

It is an amenable number.

5181224 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

5181224 is a wasteful number, since it uses less digits than its factorization.

5181224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497 (or 493 counting only the distinct ones).

The product of its digits is 640, while the sum is 23.

The square root of 5181224 is about 2276.2302168278. The cubic root of 5181224 is about 173.0390502913.

The spelling of 5181224 in words is "five million, one hundred eighty-one thousand, two hundred twenty-four".