It is a congruent number.
It is an unprimeable number.
257540 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 57540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92736).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
57540 is a wasteful number, since it uses less digits than its factorization.
57540 is an evil number, because the sum of its binary digits is even.
The square root of 57540 is about 239.8749674310. The cubic root of 57540 is about 38.6061611506.
The spelling of 57540 in words is "fifty-seven thousand, five hundred forty".