26261329 has 2 divisors, whose sum is σ = 26261330. Its totient is φ = 26261328.

The previous prime is 26261321. The next prime is 26261351. The reversal of 26261329 is 92316262.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19228225 + 7033104 = 4385^2 + 2652^2 .

It is a cyclic number.

It is not a de Polignac number, because 26261329 - 2³ = 26261321 is a prime.

It is a super-3 number, since 3×26261329³ (a number of 23 digits) contains 333 as substring.

It is equal to p_1639750 and since 26261329 and 1639750 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26261329.

It is not a weakly prime, because it can be changed into another prime (26261321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13130664 + 13130665.

It is an arithmetic number, because the mean of its divisors is an integer number (13130665).

Almost surely, 2^26261329 is an apocalyptic number.

It is an amenable number.

26261329 is a deficient number, since it is larger than the sum of its proper divisors (1).

26261329 is an equidigital number, since it uses as much as digits as its factorization.

26261329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 31.

The square root of 26261329 is about 5124.5808609095. The cubic root of 26261329 is about 297.2388462139.

The spelling of 26261329 in words is "twenty-six million, two hundred sixty-one thousand, three hundred twenty-nine".