26589481 has 2 divisors, whose sum is σ = 26589482. Its totient is φ = 26589480.

The previous prime is 26589469. The next prime is 26589487. The reversal of 26589481 is 18498562.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26173456 + 416025 = 5116^2 + 645^2 .

It is a cyclic number.

It is not a de Polignac number, because 26589481 - 2²³ = 18200873 is a prime.

It is a super-2 number, since 2×26589481² = 1414000999698722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26589487) 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 as a sum of consecutive naturals, namely, 13294740 + 13294741.

It is an arithmetic number, because the mean of its divisors is an integer number (13294741).

Almost surely, 2^26589481 is an apocalyptic number.

It is an amenable number.

26589481 is a deficient number, since it is larger than the sum of its proper divisors (1).

26589481 is an equidigital number, since it uses as much as digits as its factorization.

26589481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 138240, while the sum is 43.

The square root of 26589481 is about 5156.4989091437. The cubic root of 26589481 is about 298.4717877018.

The spelling of 26589481 in words is "twenty-six million, five hundred eighty-nine thousand, four hundred eighty-one".