57745 has 4 divisors (see below), whose sum is σ = 69300. Its totient is φ = 46192.

The previous prime is 57737. The next prime is 57751. The reversal of 57745 is 54775.

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

It can be written as a sum of positive squares in 2 ways, for example, as 41616 + 16129 = 204^2 + 127^2 .

It is a cyclic number.

It is not a de Polignac number, because 57745 - 2³ = 57737 is a prime.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 5770 + ... + 5779.

It is an arithmetic number, because the mean of its divisors is an integer number (17325).

2⁵⁷⁷⁴⁵ is an apocalyptic number.

It is an amenable number.

57745 is a deficient number, since it is larger than the sum of its proper divisors (11555).

57745 is a wasteful number, since it uses less digits than its factorization.

57745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11554.

The product of its digits is 4900, while the sum is 28.

The square root of 57745 is about 240.3018934590. The cubic root of 57745 is about 38.6519547017.

It can be divided in two parts, 5 and 7745, that added together give a triangular number (7750 = T₁₂₄).

The spelling of 57745 in words is "fifty-seven thousand, seven hundred forty-five".