26563417 has 2 divisors, whose sum is σ = 26563418. Its totient is φ = 26563416.

The previous prime is 26563399. The next prime is 26563429. The reversal of 26563417 is 71436562.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25441936 + 1121481 = 5044^2 + 1059^2 .

It is a cyclic number.

It is not a de Polignac number, because 26563417 - 2¹¹ = 26561369 is a prime.

It is not a weakly prime, because it can be changed into another prime (26563477) 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, 13281708 + 13281709.

It is an arithmetic number, because the mean of its divisors is an integer number (13281709).

Almost surely, 2^26563417 is an apocalyptic number.

It is an amenable number.

26563417 is a deficient number, since it is larger than the sum of its proper divisors (1).

26563417 is an equidigital number, since it uses as much as digits as its factorization.

26563417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 34.

The square root of 26563417 is about 5153.9709933216. The cubic root of 26563417 is about 298.3742314297.

Adding to 26563417 its reverse (71436562), we get a palindrome (97999979).

The spelling of 26563417 in words is "twenty-six million, five hundred sixty-three thousand, four hundred seventeen".