26641243 has 2 divisors, whose sum is σ = 26641244. Its totient is φ = 26641242.

The previous prime is 26641231. The next prime is 26641247. The reversal of 26641243 is 34214662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26641243 - 2¹³ = 26633051 is a prime.

It is not a weakly prime, because it can be changed into another prime (26641247) 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, 13320621 + 13320622.

It is an arithmetic number, because the mean of its divisors is an integer number (13320622).

Almost surely, 2^26641243 is an apocalyptic number.

26641243 is a deficient number, since it is larger than the sum of its proper divisors (1).

26641243 is an equidigital number, since it uses as much as digits as its factorization.

26641243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 28.

The square root of 26641243 is about 5161.5155720001. The cubic root of 26641243 is about 298.6653414644.

The spelling of 26641243 in words is "twenty-six million, six hundred forty-one thousand, two hundred forty-three".