26564449 has 2 divisors, whose sum is σ = 26564450. Its totient is φ = 26564448.

The previous prime is 26564443. The next prime is 26564459. The reversal of 26564449 is 94446562.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21790224 + 4774225 = 4668^2 + 2185^2 .

It is a cyclic number.

It is not a de Polignac number, because 26564449 - 2³ = 26564441 is a prime.

It is not a weakly prime, because it can be changed into another prime (26564441) 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, 13282224 + 13282225.

It is an arithmetic number, because the mean of its divisors is an integer number (13282225).

Almost surely, 2^26564449 is an apocalyptic number.

It is an amenable number.

26564449 is a deficient number, since it is larger than the sum of its proper divisors (1).

26564449 is an equidigital number, since it uses as much as digits as its factorization.

26564449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 40.

The square root of 26564449 is about 5154.0711093271. The cubic root of 26564449 is about 298.3780953680.

The spelling of 26564449 in words is "twenty-six million, five hundred sixty-four thousand, four hundred forty-nine".