26591401 has 2 divisors, whose sum is σ = 26591402. Its totient is φ = 26591400.

The previous prime is 26591399. The next prime is 26591413. The reversal of 26591401 is 10419562.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20241001 + 6350400 = 4499^2 + 2520^2 .

It is a cyclic number.

It is not a de Polignac number, because 26591401 - 2¹ = 26591399 is a prime.

Together with 26591399, it forms a pair of twin primes.

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 26591401.

It is not a weakly prime, because it can be changed into another prime (26591441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13295700 + 13295701.

It is an arithmetic number, because the mean of its divisors is an integer number (13295701).

Almost surely, 2^26591401 is an apocalyptic number.

It is an amenable number.

26591401 is a deficient number, since it is larger than the sum of its proper divisors (1).

26591401 is an equidigital number, since it uses as much as digits as its factorization.

26591401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 26591401 is about 5156.6850786140. The cubic root of 26591401 is about 298.4789716460.

The spelling of 26591401 in words is "twenty-six million, five hundred ninety-one thousand, four hundred one".