26520861 has 4 divisors (see below), whose sum is σ = 35361152. Its totient is φ = 17680572.

The previous prime is 26520847. The next prime is 26520881. The reversal of 26520861 is 16802562.

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 not a de Polignac number, because 26520861 - 2⁶ = 26520797 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 (26520881) 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, 4420141 + ... + 4420146.

It is an arithmetic number, because the mean of its divisors is an integer number (8840288).

Almost surely, 2^26520861 is an apocalyptic number.

It is an amenable number.

26520861 is a deficient number, since it is larger than the sum of its proper divisors (8840291).

26520861 is an equidigital number, since it uses as much as digits as its factorization.

26520861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8840290.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 26520861 is about 5149.8408713280. The cubic root of 26520861 is about 298.2148091613.

The spelling of 26520861 in words is "twenty-six million, five hundred twenty thousand, eight hundred sixty-one".