57643 has 4 divisors (see below), whose sum is σ = 58680. Its totient is φ = 56608.

The previous prime is 57641. The next prime is 57649. The reversal of 57643 is 34675.

57643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 57643 - 2¹ = 57641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 430 + ... + 547.

It is an arithmetic number, because the mean of its divisors is an integer number (14670).

2⁵⁷⁶⁴³ is an apocalyptic number.

57643 is a deficient number, since it is larger than the sum of its proper divisors (1037).

57643 is an equidigital number, since it uses as much as digits as its factorization.

57643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036.

The product of its digits is 2520, while the sum is 25.

The square root of 57643 is about 240.0895666205. The cubic root of 57643 is about 38.6291831891.

The spelling of 57643 in words is "fifty-seven thousand, six hundred forty-three".