26005513 has 2 divisors, whose sum is σ = 26005514. Its totient is φ = 26005512.

The previous prime is 26005501. The next prime is 26005541. The reversal of 26005513 is 31550062.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16345849 + 9659664 = 4043^2 + 3108^2 .

It is a cyclic number.

It is not a de Polignac number, because 26005513 - 2²¹ = 23908361 is a prime.

It is not a weakly prime, because it can be changed into another prime (26002513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13002756 + 13002757.

It is an arithmetic number, because the mean of its divisors is an integer number (13002757).

Almost surely, 2^26005513 is an apocalyptic number.

It is an amenable number.

26005513 is a deficient number, since it is larger than the sum of its proper divisors (1).

26005513 is an equidigital number, since it uses as much as digits as its factorization.

26005513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 26005513 is about 5099.5600790656. The cubic root of 26005513 is about 296.2705441313.

Adding to 26005513 its reverse (31550062), we get a palindrome (57555575).

The spelling of 26005513 in words is "twenty-six million, five thousand, five hundred thirteen".