57030 has 16 divisors (see below), whose sum is σ = 136944. Its totient is φ = 15200.

The previous prime is 56999. The next prime is 57037. The reversal of 57030 is 3075.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a nialpdrome in base 5.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57037) by changing a digit.

57030 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 7 ways as a sum of consecutive naturals, for example, 921 + ... + 980.

It is an arithmetic number, because the mean of its divisors is an integer number (8559).

2⁵⁷⁰³⁰ is an apocalyptic number.

57030 is an abundant number, since it is smaller than the sum of its proper divisors (79914).

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 (68472).

57030 is a wasteful number, since it uses less digits than its factorization.

57030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1911.

The product of its (nonzero) digits is 105, while the sum is 15.

The square root of 57030 is about 238.8095475478. The cubic root of 57030 is about 38.4917618850.

The spelling of 57030 in words is "fifty-seven thousand, thirty".