26815241 has 2 divisors, whose sum is σ = 26815242. Its totient is φ = 26815240.

The previous prime is 26815237. The next prime is 26815247. The reversal of 26815241 is 14251862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26419600 + 395641 = 5140^2 + 629^2 .

It is a cyclic number.

It is not a de Polignac number, because 26815241 - 2² = 26815237 is a prime.

It is not a weakly prime, because it can be changed into another prime (26815247) 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, 13407620 + 13407621.

It is an arithmetic number, because the mean of its divisors is an integer number (13407621).

Almost surely, 2^26815241 is an apocalyptic number.

It is an amenable number.

26815241 is a deficient number, since it is larger than the sum of its proper divisors (1).

26815241 is an equidigital number, since it uses as much as digits as its factorization.

26815241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3840, while the sum is 29.

The square root of 26815241 is about 5178.3434609921. The cubic root of 26815241 is about 299.3141405919.

The spelling of 26815241 in words is "twenty-six million, eight hundred fifteen thousand, two hundred forty-one".