26109541 has 4 divisors (see below), whose sum is σ = 27009900. Its totient is φ = 25209184.

The previous prime is 26109529. The next prime is 26109547. The reversal of 26109541 is 14590162.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14590162 = 2 ⋅7295081.

It can be written as a sum of positive squares in 2 ways, for example, as 17430625 + 8678916 = 4175^2 + 2946^2 .

It is a cyclic number.

It is not a de Polignac number, because 26109541 - 2¹⁹ = 25585253 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 (26109547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 450136 + ... + 450193.

It is an arithmetic number, because the mean of its divisors is an integer number (6752475).

Almost surely, 2^26109541 is an apocalyptic number.

It is an amenable number.

26109541 is a deficient number, since it is larger than the sum of its proper divisors (900359).

26109541 is an equidigital number, since it uses as much as digits as its factorization.

26109541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900358.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 26109541 is about 5109.7496024756. The cubic root of 26109541 is about 296.6650685153.

The spelling of 26109541 in words is "twenty-six million, one hundred nine thousand, five hundred forty-one".