26115641 has 2 divisors, whose sum is σ = 26115642. Its totient is φ = 26115640.

The previous prime is 26115629. The next prime is 26115643. The reversal of 26115641 is 14651162.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24960016 + 1155625 = 4996^2 + 1075^2 .

It is a cyclic number.

It is not a de Polignac number, because 26115641 - 2¹⁴ = 26099257 is a prime.

Together with 26115643, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_1631276 and since 26115641 and 1631276 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26115641.

It is not a weakly prime, because it can be changed into another prime (26115643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13057820 + 13057821.

It is an arithmetic number, because the mean of its divisors is an integer number (13057821).

Almost surely, 2^26115641 is an apocalyptic number.

It is an amenable number.

26115641 is a deficient number, since it is larger than the sum of its proper divisors (1).

26115641 is an equidigital number, since it uses as much as digits as its factorization.

26115641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 26.

The square root of 26115641 is about 5110.3464657497. The cubic root of 26115641 is about 296.6881701088.

The spelling of 26115641 in words is "twenty-six million, one hundred fifteen thousand, six hundred forty-one".