26280091 has 2 divisors, whose sum is σ = 26280092. Its totient is φ = 26280090.

The previous prime is 26280047. The next prime is 26280127. The reversal of 26280091 is 19008262.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26280091 - 2¹⁹ = 25755803 is a prime.

It is equal to p_1640881 and since 26280091 and 1640881 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (26280031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13140045 + 13140046.

It is an arithmetic number, because the mean of its divisors is an integer number (13140046).

Almost surely, 2^26280091 is an apocalyptic number.

26280091 is a deficient number, since it is larger than the sum of its proper divisors (1).

26280091 is an equidigital number, since it uses as much as digits as its factorization.

26280091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 26280091 is about 5126.4111228032. The cubic root of 26280091 is about 297.3096152608.

The spelling of 26280091 in words is "twenty-six million, two hundred eighty thousand, ninety-one".