26201261 has 2 divisors, whose sum is σ = 26201262. Its totient is φ = 26201260.

The previous prime is 26201237. The next prime is 26201281. The reversal of 26201261 is 16210262.

It is a happy number.

It is an a-pointer prime, because the next prime (26201281) can be obtained adding 26201261 to its sum of digits (20).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16152361 + 10048900 = 4019^2 + 3170^2 .

It is a cyclic number.

It is not a de Polignac number, because 26201261 - 2¹⁴ = 26184877 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26201281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13100630 + 13100631.

It is an arithmetic number, because the mean of its divisors is an integer number (13100631).

Almost surely, 2^26201261 is an apocalyptic number.

It is an amenable number.

26201261 is a deficient number, since it is larger than the sum of its proper divisors (1).

26201261 is an equidigital number, since it uses as much as digits as its factorization.

26201261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 26201261 is about 5118.7167337136. The cubic root of 26201261 is about 297.0120466570.

Subtracting from 26201261 its reverse (16210262), we obtain a palindrome (9990999).

It can be divided in two parts, 26201 and 261, that added together give a palindrome (26462).

The spelling of 26201261 in words is "twenty-six million, two hundred one thousand, two hundred sixty-one".