2513809 has 2 divisors, whose sum is σ = 2513810. Its totient is φ = 2513808.

The previous prime is 2513803. The next prime is 2513827. The reversal of 2513809 is 9083152.

2513809 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., 2235025 + 278784 = 1495^2 + 528^2 .

It is a cyclic number.

It is not a de Polignac number, because 2513809 - 2³ = 2513801 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2513801) 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, 1256904 + 1256905.

It is an arithmetic number, because the mean of its divisors is an integer number (1256905).

2^2513809 is an apocalyptic number.

It is an amenable number.

2513809 is a deficient number, since it is larger than the sum of its proper divisors (1).

2513809 is an equidigital number, since it uses as much as digits as its factorization.

2513809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 2513809 is about 1585.4996058025. The cubic root of 2513809 is about 135.9703114261.

The spelling of 2513809 in words is "two million, five hundred thirteen thousand, eight hundred nine".