26336561 has 4 divisors (see below), whose sum is σ = 26729712. Its totient is φ = 25943412.

The previous prime is 26336551. The next prime is 26336573. The reversal of 26336561 is 16563362.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 26336561 - 2¹⁰ = 26335537 is a prime.

It is a super-2 number, since 2×26336561² = 1387228890613442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26336521) 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, 196475 + ... + 196608.

It is an arithmetic number, because the mean of its divisors is an integer number (6682428).

Almost surely, 2^26336561 is an apocalyptic number.

It is an amenable number.

26336561 is a deficient number, since it is larger than the sum of its proper divisors (393151).

26336561 is an equidigital number, since it uses as much as digits as its factorization.

26336561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393150.

The product of its digits is 19440, while the sum is 32.

The square root of 26336561 is about 5131.9159190306. The cubic root of 26336561 is about 297.5224133950.

The spelling of 26336561 in words is "twenty-six million, three hundred thirty-six thousand, five hundred sixty-one".