26971291 has 2 divisors, whose sum is σ = 26971292. Its totient is φ = 26971290.

The previous prime is 26971289. The next prime is 26971297. The reversal of 26971291 is 19217962.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26971291 - 2¹ = 26971289 is a prime.

Together with 26971289, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26971291.

It is not a weakly prime, because it can be changed into another prime (26971297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13485645 + 13485646.

It is an arithmetic number, because the mean of its divisors is an integer number (13485646).

Almost surely, 2^26971291 is an apocalyptic number.

26971291 is a deficient number, since it is larger than the sum of its proper divisors (1).

26971291 is an equidigital number, since it uses as much as digits as its factorization.

26971291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 37.

The square root of 26971291 is about 5193.3891631573. The cubic root of 26971291 is about 299.8936326615.

The spelling of 26971291 in words is "twenty-six million, nine hundred seventy-one thousand, two hundred ninety-one".