26564201 has 4 divisors (see below), whose sum is σ = 26616900. Its totient is φ = 26511504.

The previous prime is 26564191. The next prime is 26564207. The reversal of 26564201 is 10246562.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10246562 = 2 ⋅5123281.

It can be written as a sum of positive squares in 2 ways, for example, as 8065600 + 18498601 = 2840^2 + 4301^2 .

It is a cyclic number.

It is not a de Polignac number, because 26564201 - 2¹⁸ = 26302057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (26564207) 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 in 3 ways as a sum of consecutive naturals, for example, 25586 + ... + 26603.

It is an arithmetic number, because the mean of its divisors is an integer number (6654225).

Almost surely, 2^26564201 is an apocalyptic number.

It is an amenable number.

26564201 is a deficient number, since it is larger than the sum of its proper divisors (52699).

26564201 is an equidigital number, since it uses as much as digits as its factorization.

26564201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52698.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 26564201 is about 5154.0470506195. The cubic root of 26564201 is about 298.3771668338.

The spelling of 26564201 in words is "twenty-six million, five hundred sixty-four thousand, two hundred one".