23506009 has 2 divisors, whose sum is σ = 23506010. Its totient is φ = 23506008.

The previous prime is 23506003. The next prime is 23506061. The reversal of 23506009 is 90060532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15366400 + 8139609 = 3920^2 + 2853^2 .

It is a cyclic number.

It is not a de Polignac number, because 23506009 - 2⁹ = 23505497 is a prime.

It is not a weakly prime, because it can be changed into another prime (23506003) 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, 11753004 + 11753005.

It is an arithmetic number, because the mean of its divisors is an integer number (11753005).

Almost surely, 2^23506009 is an apocalyptic number.

It is an amenable number.

23506009 is a deficient number, since it is larger than the sum of its proper divisors (1).

23506009 is an equidigital number, since it uses as much as digits as its factorization.

23506009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 23506009 is about 4848.2995988284. The cubic root of 23506009 is about 286.4571275368.

The spelling of 23506009 in words is "twenty-three million, five hundred six thousand, nine".