26522009 has 2 divisors, whose sum is σ = 26522010. Its totient is φ = 26522008.

The previous prime is 26522003. The next prime is 26522033. The reversal of 26522009 is 90022562.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26296384 + 225625 = 5128^2 + 475^2 .

It is a cyclic number.

It is not a de Polignac number, because 26522009 - 2⁴ = 26521993 is a prime.

It is a super-2 number, since 2×26522009² = 1406833922792162, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26522003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13261004 + 13261005.

It is an arithmetic number, because the mean of its divisors is an integer number (13261005).

Almost surely, 2^26522009 is an apocalyptic number.

It is an amenable number.

26522009 is a deficient number, since it is larger than the sum of its proper divisors (1).

26522009 is an equidigital number, since it uses as much as digits as its factorization.

26522009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 26522009 is about 5149.9523298765. The cubic root of 26522009 is about 298.2191120088.

It can be divided in two parts, 265 and 22009, that multiplied together give a palindrome (5832385).

The spelling of 26522009 in words is "twenty-six million, five hundred twenty-two thousand, nine".