26530291 has 2 divisors, whose sum is σ = 26530292. Its totient is φ = 26530290.

The previous prime is 26530279. The next prime is 26530307. The reversal of 26530291 is 19203562.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26530291 - 2⁹ = 26529779 is a prime.

It is not a weakly prime, because it can be changed into another prime (26530211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13265145 + 13265146.

It is an arithmetic number, because the mean of its divisors is an integer number (13265146).

Almost surely, 2^26530291 is an apocalyptic number.

26530291 is a deficient number, since it is larger than the sum of its proper divisors (1).

26530291 is an equidigital number, since it uses as much as digits as its factorization.

26530291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 26530291 is about 5150.7563522263. The cubic root of 26530291 is about 298.2501503016.

The spelling of 26530291 in words is "twenty-six million, five hundred thirty thousand, two hundred ninety-one".