259543 has 4 divisors (see below), whose sum is σ = 260568. Its totient is φ = 258520.

The previous prime is 259537. The next prime is 259547. The reversal of 259543 is 345952.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-259543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (259547) 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, 180 + ... + 742.

It is an arithmetic number, because the mean of its divisors is an integer number (65142).

2²⁵⁹⁵⁴³ is an apocalyptic number.

259543 is a deficient number, since it is larger than the sum of its proper divisors (1025).

259543 is an equidigital number, since it uses as much as digits as its factorization.

259543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024.

The product of its digits is 5400, while the sum is 28.

The square root of 259543 is about 509.4536289006. The cubic root of 259543 is about 63.7876261286.

The spelling of 259543 in words is "two hundred fifty-nine thousand, five hundred forty-three".