26549 has 4 divisors (see below), whose sum is σ = 26880. Its totient is φ = 26220.

The previous prime is 26539. The next prime is 26557. The reversal of 26549 is 94562.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 26549 - 2⁸ = 26293 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12 and base 15.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26539) 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, 44 + ... + 234.

It is an arithmetic number, because the mean of its divisors is an integer number (6720).

2²⁶⁵⁴⁹ is an apocalyptic number.

It is an amenable number.

26549 is a deficient number, since it is larger than the sum of its proper divisors (331).

26549 is a wasteful number, since it uses less digits than its factorization.

26549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330.

The product of its digits is 2160, while the sum is 26.

The square root of 26549 is about 162.9386387570. The cubic root of 26549 is about 29.8320241893.

Subtracting from 26549 its product of digits (2160), we obtain a cube (24389 = 29³).

It can be divided in two parts, 26 and 549, that added together give a palindrome (575).

The spelling of 26549 in words is "twenty-six thousand, five hundred forty-nine".