26000291 has 2 divisors, whose sum is σ = 26000292. Its totient is φ = 26000290.

The previous prime is 26000279. The next prime is 26000309. The reversal of 26000291 is 19200062.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26000291 - 2¹⁸ = 25738147 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (26000201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13000145 + 13000146.

It is an arithmetic number, because the mean of its divisors is an integer number (13000146).

Almost surely, 2^26000291 is an apocalyptic number.

26000291 is a deficient number, since it is larger than the sum of its proper divisors (1).

26000291 is an equidigital number, since it uses as much as digits as its factorization.

26000291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 26000291 is about 5099.0480484106. The cubic root of 26000291 is about 296.2507120755.

The spelling of 26000291 in words is "twenty-six million, two hundred ninety-one", and thus it is an aban number.