57256 has 16 divisors (see below), whose sum is σ = 113940. Its totient is φ = 26880.

The previous prime is 57251. The next prime is 57259. The reversal of 57256 is 65275.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 54756 + 2500 = 234^2 + 50^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 57256.

It is not an unprimeable number, because it can be changed into a prime (57251) by changing a digit.

57256 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 3 ways as a sum of consecutive naturals, for example, 75 + ... + 346.

2⁵⁷²⁵⁶ is an apocalyptic number.

It is an amenable number.

57256 is a deficient number, since it is larger than the sum of its proper divisors (56684).

57256 is a wasteful number, since it uses less digits than its factorization.

57256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444 (or 440 counting only the distinct ones).

The product of its digits is 2100, while the sum is 25.

The square root of 57256 is about 239.2822601030. The cubic root of 57256 is about 38.5425402610.

It can be divided in two parts, 57 and 256, that added together give a palindrome (313).

The spelling of 57256 in words is "fifty-seven thousand, two hundred fifty-six".