2575509 has 4 divisors (see below), whose sum is σ = 3434016. Its totient is φ = 1717004.

The previous prime is 2575499. The next prime is 2575523. The reversal of 2575509 is 9055752.

2575509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2575509 - 2⁴ = 2575493 is a prime.

It is a D-number.

It is a Curzon number.

2575509 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2575509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2575549) 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 in 3 ways as a sum of consecutive naturals, for example, 429249 + ... + 429254.

It is an arithmetic number, because the mean of its divisors is an integer number (858504).

2^2575509 is an apocalyptic number.

It is an amenable number.

2575509 is a deficient number, since it is larger than the sum of its proper divisors (858507).

2575509 is an equidigital number, since it uses as much as digits as its factorization.

2575509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858506.

The product of its (nonzero) digits is 15750, while the sum is 33.

The square root of 2575509 is about 1604.8392442859. The cubic root of 2575509 is about 137.0737699209.

The spelling of 2575509 in words is "two million, five hundred seventy-five thousand, five hundred nine".