26145091 has 4 divisors (see below), whose sum is σ = 29880112. Its totient is φ = 22410072.

The previous prime is 26145073. The next prime is 26145127. The reversal of 26145091 is 19054162.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19054162 = 2 ⋅9527081.

It is a cyclic number.

It is not a de Polignac number, because 26145091 - 2⁹ = 26144579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26145061) 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, 1867500 + ... + 1867513.

It is an arithmetic number, because the mean of its divisors is an integer number (7470028).

Almost surely, 2^26145091 is an apocalyptic number.

26145091 is a deficient number, since it is larger than the sum of its proper divisors (3735021).

26145091 is an equidigital number, since it uses as much as digits as its factorization.

26145091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3735020.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 26145091 is about 5113.2270632156. The cubic root of 26145091 is about 296.7996509938.

The spelling of 26145091 in words is "twenty-six million, one hundred forty-five thousand, ninety-one".