26881541 has 4 divisors (see below), whose sum is σ = 27322284. Its totient is φ = 26440800.

The previous prime is 26881529. The next prime is 26881571. The reversal of 26881541 is 14518862.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14518862 = 2 ⋅7259431.

It can be written as a sum of positive squares in 2 ways, for example, as 12630916 + 14250625 = 3554^2 + 3775^2 .

It is a cyclic number.

It is not a de Polignac number, because 26881541 - 2²² = 22687237 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 (26881501) 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 3 ways as a sum of consecutive naturals, for example, 220280 + ... + 220401.

It is an arithmetic number, because the mean of its divisors is an integer number (6830571).

Almost surely, 2^26881541 is an apocalyptic number.

It is an amenable number.

26881541 is a deficient number, since it is larger than the sum of its proper divisors (440743).

26881541 is an equidigital number, since it uses as much as digits as its factorization.

26881541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440742.

The product of its digits is 15360, while the sum is 35.

The square root of 26881541 is about 5184.7411700103. The cubic root of 26881541 is about 299.5606197605.

The spelling of 26881541 in words is "twenty-six million, eight hundred eighty-one thousand, five hundred forty-one".