26381801 has 2 divisors, whose sum is σ = 26381802. Its totient is φ = 26381800.

The previous prime is 26381743. The next prime is 26381827. The reversal of 26381801 is 10818362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17977600 + 8404201 = 4240^2 + 2899^2 .

It is a cyclic number.

It is not a de Polignac number, because 26381801 - 2¹⁰ = 26380777 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (26381881) 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, 13190900 + 13190901.

It is an arithmetic number, because the mean of its divisors is an integer number (13190901).

Almost surely, 2^26381801 is an apocalyptic number.

It is an amenable number.

26381801 is a deficient number, since it is larger than the sum of its proper divisors (1).

26381801 is an equidigital number, since it uses as much as digits as its factorization.

26381801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 26381801 is about 5136.3217383649. The cubic root of 26381801 is about 297.6926737205.

The spelling of 26381801 in words is "twenty-six million, three hundred eighty-one thousand, eight hundred one".