26018261 has 2 divisors, whose sum is σ = 26018262. Its totient is φ = 26018260.

The previous prime is 26018183. The next prime is 26018263. The reversal of 26018261 is 16281062.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15062161 + 10956100 = 3881^2 + 3310^2 .

It is a cyclic number.

It is not a de Polignac number, because 26018261 - 2¹⁰ = 26017237 is a prime.

Together with 26018263, it forms a pair of twin primes.

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 26018261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26018263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13009130 + 13009131.

It is an arithmetic number, because the mean of its divisors is an integer number (13009131).

Almost surely, 2^26018261 is an apocalyptic number.

It is an amenable number.

26018261 is a deficient number, since it is larger than the sum of its proper divisors (1).

26018261 is an equidigital number, since it uses as much as digits as its factorization.

26018261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 26018261 is about 5100.8098376630. The cubic root of 26018261 is about 296.3189472003.

The spelling of 26018261 in words is "twenty-six million, eighteen thousand, two hundred sixty-one".