26081161 has 2 divisors, whose sum is σ = 26081162. Its totient is φ = 26081160.

The previous prime is 26081117. The next prime is 26081219. The reversal of 26081161 is 16118062.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19527561 + 6553600 = 4419^2 + 2560^2 .

It is a cyclic number.

It is not a de Polignac number, because 26081161 - 2¹⁹ = 25556873 is a prime.

It is not a weakly prime, because it can be changed into another prime (26081761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13040580 + 13040581.

It is an arithmetic number, because the mean of its divisors is an integer number (13040581).

Almost surely, 2^26081161 is an apocalyptic number.

It is an amenable number.

26081161 is a deficient number, since it is larger than the sum of its proper divisors (1).

26081161 is an equidigital number, since it uses as much as digits as its factorization.

26081161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 26081161 is about 5106.9718033292. The cubic root of 26081161 is about 296.5575419603.

The spelling of 26081161 in words is "twenty-six million, eighty-one thousand, one hundred sixty-one".