26580161 has 2 divisors, whose sum is σ = 26580162. Its totient is φ = 26580160.

The previous prime is 26580121. The next prime is 26580167. The reversal of 26580161 is 16108562.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22090000 + 4490161 = 4700^2 + 2119^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26580161 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26580167) 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, 13290080 + 13290081.

It is an arithmetic number, because the mean of its divisors is an integer number (13290081).

Almost surely, 2^26580161 is an apocalyptic number.

It is an amenable number.

26580161 is a deficient number, since it is larger than the sum of its proper divisors (1).

26580161 is an equidigital number, since it uses as much as digits as its factorization.

26580161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 26580161 is about 5155.5951159881. The cubic root of 26580161 is about 298.4369107250.

The spelling of 26580161 in words is "twenty-six million, five hundred eighty thousand, one hundred sixty-one".