57026 has 4 divisors (see below), whose sum is σ = 85542. Its totient is φ = 28512.

The previous prime is 56999. The next prime is 57037. The reversal of 57026 is 62075.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 34225 + 22801 = 185^2 + 151^2 .

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 56989 and 57007.

It is an unprimeable number.

57026 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 as a sum of consecutive naturals, namely, 14255 + ... + 14258.

2⁵⁷⁰²⁶ is an apocalyptic number.

57026 is a deficient number, since it is larger than the sum of its proper divisors (28516).

57026 is a wasteful number, since it uses less digits than its factorization.

57026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28515.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 57026 is about 238.8011725264. The cubic root of 57026 is about 38.4908619455.

The spelling of 57026 in words is "fifty-seven thousand, twenty-six".