26489563 has 2 divisors, whose sum is σ = 26489564. Its totient is φ = 26489562.

The previous prime is 26489543. The next prime is 26489579. The reversal of 26489563 is 36598462.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26489563 - 2²¹ = 24392411 is a prime.

It is not a weakly prime, because it can be changed into another prime (26489513) 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, 13244781 + 13244782.

It is an arithmetic number, because the mean of its divisors is an integer number (13244782).

Almost surely, 2^26489563 is an apocalyptic number.

26489563 is a deficient number, since it is larger than the sum of its proper divisors (1).

26489563 is an equidigital number, since it uses as much as digits as its factorization.

26489563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 43.

The square root of 26489563 is about 5146.8012396050. The cubic root of 26489563 is about 298.0974524750.

It can be divided in two parts, 264 and 89563, that multiplied together give a palindrome (23644632).

The spelling of 26489563 in words is "twenty-six million, four hundred eighty-nine thousand, five hundred sixty-three".