26565197 has 2 divisors, whose sum is σ = 26565198. Its totient is φ = 26565196.

The previous prime is 26565179. The next prime is 26565221. The reversal of 26565197 is 79156562.

Together with previous prime (26565179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20967241 + 5597956 = 4579^2 + 2366^2 .

It is a cyclic number.

It is not a de Polignac number, because 26565197 - 2¹⁰ = 26564173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26565127) 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, 13282598 + 13282599.

It is an arithmetic number, because the mean of its divisors is an integer number (13282599).

Almost surely, 2^26565197 is an apocalyptic number.

It is an amenable number.

26565197 is a deficient number, since it is larger than the sum of its proper divisors (1).

26565197 is an equidigital number, since it uses as much as digits as its factorization.

26565197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 113400, while the sum is 41.

The square root of 26565197 is about 5154.1436728132. The cubic root of 26565197 is about 298.3808959120.

It can be divided in two parts, 26565 and 197, that added together give a palindrome (26762).

The spelling of 26565197 in words is "twenty-six million, five hundred sixty-five thousand, one hundred ninety-seven".