26050561 has 12 divisors (see below), whose sum is σ = 27175908. Its totient is φ = 24966144.

The previous prime is 26050547. The next prime is 26050589. The reversal of 26050561 is 16505062.

It can be written as a sum of positive squares in 2 ways, for example, as 10400625 + 15649936 = 3225^2 + 3956^2 .

It is not a de Polignac number, because 26050561 - 2¹¹ = 26048513 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26050061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 134881 + ... + 135073.

It is an arithmetic number, because the mean of its divisors is an integer number (2264659).

It is a Proth number, since it is equal to 795 ⋅ 2¹⁵ + 1 and 795 < 2¹⁵.

Almost surely, 2^26050561 is an apocalyptic number.

It is an amenable number.

26050561 is a deficient number, since it is larger than the sum of its proper divisors (1125347).

26050561 is an equidigital number, since it uses as much as digits as its factorization.

26050561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352 (or 309 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 26050561 is about 5103.9750195313. The cubic root of 26050561 is about 296.4415168074.

The spelling of 26050561 in words is "twenty-six million, fifty thousand, five hundred sixty-one".