2563009 has 2 divisors, whose sum is σ = 2563010. Its totient is φ = 2563008.

The previous prime is 2563007. The next prime is 2563013. The reversal of 2563009 is 9003652.

2563009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1882384 + 680625 = 1372^2 + 825^2 .

It is a cyclic number.

It is not a de Polignac number, because 2563009 - 2¹ = 2563007 is a prime.

Together with 2563007, it forms a pair of twin primes.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (2563003) 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, 1281504 + 1281505.

It is an arithmetic number, because the mean of its divisors is an integer number (1281505).

2^2563009 is an apocalyptic number.

It is an amenable number.

2563009 is a deficient number, since it is larger than the sum of its proper divisors (1).

2563009 is an equidigital number, since it uses as much as digits as its factorization.

2563009 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 2563009 is about 1600.9400363536. The cubic root of 2563009 is about 136.8516518073.

The spelling of 2563009 in words is "two million, five hundred sixty-three thousand, nine".