26875021 has 2 divisors, whose sum is σ = 26875022. Its totient is φ = 26875020.

The previous prime is 26875007. The next prime is 26875027. The reversal of 26875021 is 12057862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16240900 + 10634121 = 4030^2 + 3261^2 .

It is a cyclic number.

It is not a de Polignac number, because 26875021 - 2⁷ = 26874893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26875027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13437510 + 13437511.

It is an arithmetic number, because the mean of its divisors is an integer number (13437511).

Almost surely, 2^26875021 is an apocalyptic number.

It is an amenable number.

26875021 is a deficient number, since it is larger than the sum of its proper divisors (1).

26875021 is an equidigital number, since it uses as much as digits as its factorization.

26875021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 26875021 is about 5184.1123637514. The cubic root of 26875021 is about 299.5363987635.

The spelling of 26875021 in words is "twenty-six million, eight hundred seventy-five thousand, twenty-one".