57530 has 16 divisors (see below), whose sum is σ = 113184. Its totient is φ = 20880.
The previous prime is 57529. The next prime is 57557. The reversal of 57530 is 3575.
57530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a Curzon number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152 + ... + 371.
It is an arithmetic number, because the mean of its divisors is an integer number (7074).
257530 is an apocalyptic number.
57530 is a deficient number, since it is larger than the sum of its proper divisors (55654).
57530 is a wasteful number, since it uses less digits than its factorization.
57530 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 541.
The product of its (nonzero) digits is 525, while the sum is 20.
The square root of 57530 is about 239.8541223327. The cubic root of 57530 is about 38.6039245386.
The spelling of 57530 in words is "fifty-seven thousand, five hundred thirty".
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