26391241 has 4 divisors (see below), whose sum is σ = 26414212. Its totient is φ = 26368272.

The previous prime is 26391193. The next prime is 26391251. The reversal of 26391241 is 14219362.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14219362 = 2 ⋅7109681.

It can be written as a sum of positive squares in 2 ways, for example, as 12110400 + 14280841 = 3480^2 + 3779^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26391241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26391251) 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, 9666 + ... + 12091.

It is an arithmetic number, because the mean of its divisors is an integer number (6603553).

Almost surely, 2^26391241 is an apocalyptic number.

It is an amenable number.

26391241 is a deficient number, since it is larger than the sum of its proper divisors (22971).

26391241 is a wasteful number, since it uses less digits than its factorization.

26391241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22970.

The product of its digits is 2592, while the sum is 28.

The square root of 26391241 is about 5137.2406017238. The cubic root of 26391241 is about 297.7281765244.

The spelling of 26391241 in words is "twenty-six million, three hundred ninety-one thousand, two hundred forty-one".