26217601 has 2 divisors, whose sum is σ = 26217602. Its totient is φ = 26217600.

The previous prime is 26217577. The next prime is 26217613. The reversal of 26217601 is 10671262.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19847025 + 6370576 = 4455^2 + 2524^2 .

It is a cyclic number.

It is not a de Polignac number, because 26217601 - 2¹⁹ = 25693313 is a prime.

It is not a weakly prime, because it can be changed into another prime (26217641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13108800 + 13108801.

It is an arithmetic number, because the mean of its divisors is an integer number (13108801).

Almost surely, 2^26217601 is an apocalyptic number.

It is an amenable number.

26217601 is a deficient number, since it is larger than the sum of its proper divisors (1).

26217601 is an equidigital number, since it uses as much as digits as its factorization.

26217601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 26217601 is about 5120.3125881141. The cubic root of 26217601 is about 297.0737761074.

Adding to 26217601 its reverse (10671262), we get a palindrome (36888863).

The spelling of 26217601 in words is "twenty-six million, two hundred seventeen thousand, six hundred one".