26226391 has 2 divisors, whose sum is σ = 26226392. Its totient is φ = 26226390.

The previous prime is 26226383. The next prime is 26226397. The reversal of 26226391 is 19362262.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26226391 - 2³ = 26226383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26226397) 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, 13113195 + 13113196.

It is an arithmetic number, because the mean of its divisors is an integer number (13113196).

Almost surely, 2^26226391 is an apocalyptic number.

26226391 is a deficient number, since it is larger than the sum of its proper divisors (1).

26226391 is an equidigital number, since it uses as much as digits as its factorization.

26226391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 31.

The square root of 26226391 is about 5121.1708622150. The cubic root of 26226391 is about 297.1069724668.

The spelling of 26226391 in words is "twenty-six million, two hundred twenty-six thousand, three hundred ninety-one".