26118997 has 2 divisors, whose sum is σ = 26118998. Its totient is φ = 26118996.

The previous prime is 26118979. The next prime is 26119001. The reversal of 26118997 is 79981162.

Together with previous prime (26118979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25542916 + 576081 = 5054^2 + 759^2 .

It is a cyclic number.

It is not a de Polignac number, because 26118997 - 2¹¹ = 26116949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26118397) 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, 13059498 + 13059499.

It is an arithmetic number, because the mean of its divisors is an integer number (13059499).

Almost surely, 2^26118997 is an apocalyptic number.

It is an amenable number.

26118997 is a deficient number, since it is larger than the sum of its proper divisors (1).

26118997 is an equidigital number, since it uses as much as digits as its factorization.

26118997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 43.

The square root of 26118997 is about 5110.6748086725. The cubic root of 26118997 is about 296.7008782384.

The spelling of 26118997 in words is "twenty-six million, one hundred eighteen thousand, nine hundred ninety-seven".