26310491 has 2 divisors, whose sum is σ = 26310492. Its totient is φ = 26310490.

The previous prime is 26310461. The next prime is 26310503. The reversal of 26310491 is 19401362.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26310491 - 2²² = 22116187 is a prime.

It is a super-2 number, since 2×26310491² = 1384483873322162, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26310491.

It is not a weakly prime, because it can be changed into another prime (26310461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13155245 + 13155246.

It is an arithmetic number, because the mean of its divisors is an integer number (13155246).

Almost surely, 2^26310491 is an apocalyptic number.

26310491 is a deficient number, since it is larger than the sum of its proper divisors (1).

26310491 is an equidigital number, since it uses as much as digits as its factorization.

26310491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 26310491 is about 5129.3753030949. The cubic root of 26310491 is about 297.4242106212.

The spelling of 26310491 in words is "twenty-six million, three hundred ten thousand, four hundred ninety-one".