26653261 has 2 divisors, whose sum is σ = 26653262. Its totient is φ = 26653260.

The previous prime is 26653259. The next prime is 26653307. The reversal of 26653261 is 16235662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18062500 + 8590761 = 4250^2 + 2931^2 .

It is a cyclic number.

It is not a de Polignac number, because 26653261 - 2¹ = 26653259 is a prime.

Together with 26653259, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26653201) 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, 13326630 + 13326631.

It is an arithmetic number, because the mean of its divisors is an integer number (13326631).

Almost surely, 2^26653261 is an apocalyptic number.

It is an amenable number.

26653261 is a deficient number, since it is larger than the sum of its proper divisors (1).

26653261 is an equidigital number, since it uses as much as digits as its factorization.

26653261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 31.

The square root of 26653261 is about 5162.6796336786. The cubic root of 26653261 is about 298.7102445304.

The spelling of 26653261 in words is "twenty-six million, six hundred fifty-three thousand, two hundred sixty-one".