26306261 has 2 divisors, whose sum is σ = 26306262. Its totient is φ = 26306260.

The previous prime is 26306257. The next prime is 26306299. The reversal of 26306261 is 16260362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25908100 + 398161 = 5090^2 + 631^2 .

It is a cyclic number.

It is not a de Polignac number, because 26306261 - 2² = 26306257 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26306261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26306221) 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, 13153130 + 13153131.

It is an arithmetic number, because the mean of its divisors is an integer number (13153131).

Almost surely, 2^26306261 is an apocalyptic number.

It is an amenable number.

26306261 is a deficient number, since it is larger than the sum of its proper divisors (1).

26306261 is an equidigital number, since it uses as much as digits as its factorization.

26306261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 26306261 is about 5128.9629556081. The cubic root of 26306261 is about 297.4082705685.

The spelling of 26306261 in words is "twenty-six million, three hundred six thousand, two hundred sixty-one".