26212091 has 2 divisors, whose sum is σ = 26212092. Its totient is φ = 26212090.

The previous prime is 26212061. The next prime is 26212093. The reversal of 26212091 is 19021262.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26212091 is a prime.

Together with 26212093, 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 (26212093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13106045 + 13106046.

It is an arithmetic number, because the mean of its divisors is an integer number (13106046).

Almost surely, 2^26212091 is an apocalyptic number.

26212091 is a deficient number, since it is larger than the sum of its proper divisors (1).

26212091 is an equidigital number, since it uses as much as digits as its factorization.

26212091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 26212091 is about 5119.7745067532. The cubic root of 26212091 is about 297.0529632294.

The spelling of 26212091 in words is "twenty-six million, two hundred twelve thousand, ninety-one".