57444 has 12 divisors (see below), whose sum is σ = 134064. Its totient is φ = 19144.

The previous prime is 57427. The next prime is 57457. The reversal of 57444 is 44475.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

57444 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2382 + ... + 2405.

It is an arithmetic number, because the mean of its divisors is an integer number (11172).

2⁵⁷⁴⁴⁴ is an apocalyptic number.

It is an amenable number.

57444 is an abundant number, since it is smaller than the sum of its proper divisors (76620).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67032).

57444 is a wasteful number, since it uses less digits than its factorization.

57444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4794 (or 4792 counting only the distinct ones).

The product of its digits is 2240, while the sum is 24.

The square root of 57444 is about 239.6747796494. The cubic root of 57444 is about 38.5846789671.

The spelling of 57444 in words is "fifty-seven thousand, four hundred forty-four".