57020 has 12 divisors (see below), whose sum is σ = 119784. Its totient is φ = 22800.

The previous prime is 56999. The next prime is 57037. The reversal of 57020 is 2075.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 56986 and 57004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1406 + ... + 1445.

It is an arithmetic number, because the mean of its divisors is an integer number (9982).

2⁵⁷⁰²⁰ is an apocalyptic number.

It is an amenable number.

57020 is an abundant number, since it is smaller than the sum of its proper divisors (62764).

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 (59892).

57020 is a wasteful number, since it uses less digits than its factorization.

57020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2860 (or 2858 counting only the distinct ones).

The product of its (nonzero) digits is 70, while the sum is 14.

The square root of 57020 is about 238.7886094436. The cubic root of 57020 is about 38.4895119573.

Adding to 57020 its reverse (2075), we get a palindrome (59095).

Subtracting from 57020 its reverse (2075), we obtain a palindrome (54945).

The spelling of 57020 in words is "fifty-seven thousand, twenty".