57540224 has 64 divisors (see below), whose sum is σ = 132192000. Its totient is φ = 24437760.

The previous prime is 57540221. The next prime is 57540239. The reversal of 57540224 is 42204575.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (57540221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133289 + ... + 133719.

It is an arithmetic number, because the mean of its divisors is an integer number (2065500).

Almost surely, 2^57540224 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 57540224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66096000).

57540224 is an abundant number, since it is smaller than the sum of its proper divisors (74651776).

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

57540224 is a wasteful number, since it uses less digits than its factorization.

57540224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601 (or 589 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 29.

The square root of 57540224 is about 7585.5272723786. The cubic root of 57540224 is about 386.0621124778.

Adding to 57540224 its reverse (42204575), we get a palindrome (99744799).

The spelling of 57540224 in words is "fifty-seven million, five hundred forty thousand, two hundred twenty-four".