26056109 has 4 divisors (see below), whose sum is σ = 26413116. Its totient is φ = 25699104.

The previous prime is 26056061. The next prime is 26056117. The reversal of 26056109 is 90165062.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7823209 + 18232900 = 2797^2 + 4270^2 .

It is a cyclic number.

It is not a de Polignac number, because 26056109 - 2²⁰ = 25007533 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26056159) 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, 178394 + ... + 178539.

It is an arithmetic number, because the mean of its divisors is an integer number (6603279).

Almost surely, 2^26056109 is an apocalyptic number.

It is an amenable number.

26056109 is a deficient number, since it is larger than the sum of its proper divisors (357007).

26056109 is an equidigital number, since it uses as much as digits as its factorization.

26056109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357006.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 26056109 is about 5104.5184885550. The cubic root of 26056109 is about 296.4625597425.

The spelling of 26056109 in words is "twenty-six million, fifty-six thousand, one hundred nine".