26191 has 4 divisors (see below), whose sum is σ = 28584. Its totient is φ = 23800.

The previous prime is 26189. The next prime is 26203. The reversal of 26191 is 19162.

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 26191 - 2¹ = 26189 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 (26111) 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, 1180 + ... + 1201.

It is an arithmetic number, because the mean of its divisors is an integer number (7146).

2²⁶¹⁹¹ is an apocalyptic number.

26191 is a deficient number, since it is larger than the sum of its proper divisors (2393).

26191 is a wasteful number, since it uses less digits than its factorization.

26191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2392.

The product of its digits is 108, while the sum is 19.

The square root of 26191 is about 161.8363370816. The cubic root of 26191 is about 29.6973269407.

The spelling of 26191 in words is "twenty-six thousand, one hundred ninety-one".