26581097 has 2 divisors, whose sum is σ = 26581098. Its totient is φ = 26581096.

The previous prime is 26581039. The next prime is 26581127. The reversal of 26581097 is 79018562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20286016 + 6295081 = 4504^2 + 2509^2 .

It is a cyclic number.

It is not a de Polignac number, because 26581097 - 2¹⁸ = 26318953 is a prime.

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 26581097.

It is not a weakly prime, because it can be changed into another prime (26581397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13290548 + 13290549.

It is an arithmetic number, because the mean of its divisors is an integer number (13290549).

Almost surely, 2^26581097 is an apocalyptic number.

It is an amenable number.

26581097 is a deficient number, since it is larger than the sum of its proper divisors (1).

26581097 is an equidigital number, since it uses as much as digits as its factorization.

26581097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 26581097 is about 5155.6858903545. The cubic root of 26581097 is about 298.4404137596.

The spelling of 26581097 in words is "twenty-six million, five hundred eighty-one thousand, ninety-seven".