26491271 has 2 divisors, whose sum is σ = 26491272. Its totient is φ = 26491270.

The previous prime is 26491259. The next prime is 26491313. The reversal of 26491271 is 17219462.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26491271 - 2¹⁴ = 26474887 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26491771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13245635 + 13245636.

It is an arithmetic number, because the mean of its divisors is an integer number (13245636).

Almost surely, 2^26491271 is an apocalyptic number.

26491271 is a deficient number, since it is larger than the sum of its proper divisors (1).

26491271 is an equidigital number, since it uses as much as digits as its factorization.

26491271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 32.

The square root of 26491271 is about 5146.9671652343. The cubic root of 26491271 is about 298.1038592688.

It can be divided in two parts, 26491 and 271, that added together give a palindrome (26762).

The spelling of 26491271 in words is "twenty-six million, four hundred ninety-one thousand, two hundred seventy-one".