57224 has 16 divisors (see below), whose sum is σ = 112320. Its totient is φ = 27280.

The previous prime is 57223. The next prime is 57241. The reversal of 57224 is 42275.

It is a nialpdrome in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 57196 and 57205.

It is not an unprimeable number, because it can be changed into a prime (57221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29 + ... + 339.

It is an arithmetic number, because the mean of its divisors is an integer number (7020).

2⁵⁷²²⁴ is an apocalyptic number.

It is an amenable number.

57224 is a deficient number, since it is larger than the sum of its proper divisors (55096).

57224 is a wasteful number, since it uses less digits than its factorization.

57224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340 (or 336 counting only the distinct ones).

The product of its digits is 560, while the sum is 20.

The square root of 57224 is about 239.2153841207. The cubic root of 57224 is about 38.5353585326.

Adding to 57224 its reverse (42275), we get a palindrome (99499).

The spelling of 57224 in words is "fifty-seven thousand, two hundred twenty-four".