26126209 has 2 divisors, whose sum is σ = 26126210. Its totient is φ = 26126208.

The previous prime is 26126167. The next prime is 26126227. The reversal of 26126209 is 90262162.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19775809 + 6350400 = 4447^2 + 2520^2 .

It is a cyclic number.

It is not a de Polignac number, because 26126209 - 2⁷ = 26126081 is a prime.

It is not a weakly prime, because it can be changed into another prime (26126249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13063104 + 13063105.

It is an arithmetic number, because the mean of its divisors is an integer number (13063105).

Almost surely, 2^26126209 is an apocalyptic number.

It is an amenable number.

26126209 is a deficient number, since it is larger than the sum of its proper divisors (1).

26126209 is an equidigital number, since it uses as much as digits as its factorization.

26126209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 26126209 is about 5111.3803419429. The cubic root of 26126209 is about 296.7281841595.

It can be divided in two parts, 26126 and 209, that added together give a triangular number (26335 = T₂₂₉).

The spelling of 26126209 in words is "twenty-six million, one hundred twenty-six thousand, two hundred nine".