26543 has 8 divisors (see below), whose sum is σ = 30720. Its totient is φ = 22680.

The previous prime is 26539. The next prime is 26557. The reversal of 26543 is 34562.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 26543 - 2² = 26539 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146 + ... + 272.

It is an arithmetic number, because the mean of its divisors is an integer number (3840).

2²⁶⁵⁴³ is an apocalyptic number.

26543 is a deficient number, since it is larger than the sum of its proper divisors (4177).

26543 is a wasteful number, since it uses less digits than its factorization.

26543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157.

The product of its digits is 720, while the sum is 20.

The square root of 26543 is about 162.9202258776. The cubic root of 26543 is about 29.8297767018.

The spelling of 26543 in words is "twenty-six thousand, five hundred forty-three".