26530165 has 4 divisors (see below), whose sum is σ = 31836204. Its totient is φ = 21224128.

The previous prime is 26530159. The next prime is 26530169. The reversal of 26530165 is 56103562.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7187761 + 19342404 = 2681^2 + 4398^2 .

It is a cyclic number.

It is not a de Polignac number, because 26530165 - 2⁹ = 26529653 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 (26530169) 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, 2653012 + ... + 2653021.

It is an arithmetic number, because the mean of its divisors is an integer number (7959051).

Almost surely, 2^26530165 is an apocalyptic number.

It is an amenable number.

26530165 is a deficient number, since it is larger than the sum of its proper divisors (5306039).

26530165 is an equidigital number, since it uses as much as digits as its factorization.

26530165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5306038.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 26530165 is about 5150.7441209984. The cubic root of 26530165 is about 298.2496781422.

The spelling of 26530165 in words is "twenty-six million, five hundred thirty thousand, one hundred sixty-five".