526664009 has 2 divisors, whose sum is σ = 526664010. Its totient is φ = 526664008.

The previous prime is 526663993. The next prime is 526664027. The reversal of 526664009 is 900466625.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 514609225 + 12054784 = 22685^2 + 3472^2 .

It is a cyclic number.

It is not a de Polignac number, because 526664009 - 2⁴ = 526663993 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (526664069) 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, 263332004 + 263332005.

It is an arithmetic number, because the mean of its divisors is an integer number (263332005).

Almost surely, 2^526664009 is an apocalyptic number.

It is an amenable number.

526664009 is a deficient number, since it is larger than the sum of its proper divisors (1).

526664009 is an equidigital number, since it uses as much as digits as its factorization.

526664009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 526664009 is about 22949.1614008007. The cubic root of 526664009 is about 807.5657288175.

The spelling of 526664009 in words is "five hundred twenty-six million, six hundred sixty-four thousand, nine".