57044224 has 36 divisors (see below), whose sum is σ = 114349536. Its totient is φ = 28401152.

The previous prime is 57044219. The next prime is 57044227. The reversal of 57044224 is 42244075.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 57044192 and 57044201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57044227) 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 3 ways as a sum of consecutive naturals, for example, 113157 + ... + 113659.

It is an arithmetic number, because the mean of its divisors is an integer number (3176376).

Almost surely, 2^57044224 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 57044224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57174768).

57044224 is an abundant number, since it is smaller than the sum of its proper divisors (57305312).

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

57044224 is an equidigital number, since it uses as much as digits as its factorization.

57044224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962 (or 948 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 28.

The square root of 57044224 is about 7552.7626733534. The cubic root of 57044224 is about 384.9496172896.

Adding to 57044224 its reverse (42244075), we get a palindrome (99288299).

The spelling of 57044224 in words is "fifty-seven million, forty-four thousand, two hundred twenty-four".