26571091 has 2 divisors, whose sum is σ = 26571092. Its totient is φ = 26571090.

The previous prime is 26571089. The next prime is 26571133. The reversal of 26571091 is 19017562.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26571091 - 2¹ = 26571089 is a prime.

Together with 26571089, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26571001) 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 as a sum of consecutive naturals, namely, 13285545 + 13285546.

It is an arithmetic number, because the mean of its divisors is an integer number (13285546).

Almost surely, 2^26571091 is an apocalyptic number.

26571091 is a deficient number, since it is larger than the sum of its proper divisors (1).

26571091 is an equidigital number, since it uses as much as digits as its factorization.

26571091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 26571091 is about 5154.7154140651. The cubic root of 26571091 is about 298.4029614608.

The spelling of 26571091 in words is "twenty-six million, five hundred seventy-one thousand, ninety-one".