57808 has 10 divisors (see below), whose sum is σ = 112034. Its totient is φ = 28896.

The previous prime is 57803. The next prime is 57809. The reversal of 57808 is 80875.

It can be written as a sum of positive squares in only one way, i.e., 29584 + 28224 = 172^2 + 168^2 .

It is an Ulam number.

It is a plaindrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1791 + ... + 1822.

2⁵⁷⁸⁰⁸ is an apocalyptic number.

It is an amenable number.

57808 is a deficient number, since it is larger than the sum of its proper divisors (54226).

57808 is a wasteful number, since it uses less digits than its factorization.

57808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3621 (or 3615 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 57808 is about 240.4329428344. The cubic root of 57808 is about 38.6660060661. Note that the first 3 decimals are identical.

It can be divided in two parts, 57 and 808, that multiplied together give a triangular number (46056 = T₃₀₃).

The spelling of 57808 in words is "fifty-seven thousand, eight hundred eight".