2529509 has 4 divisors (see below), whose sum is σ = 2533440. Its totient is φ = 2525580.

The previous prime is 2529491. The next prime is 2529511. The reversal of 2529509 is 9059252.

2529509 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 2529509 - 2⁸ = 2529253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2529529) 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, 749 + ... + 2370.

It is an arithmetic number, because the mean of its divisors is an integer number (633360).

2^2529509 is an apocalyptic number.

It is an amenable number.

2529509 is a deficient number, since it is larger than the sum of its proper divisors (3931).

2529509 is an equidigital number, since it uses as much as digits as its factorization.

2529509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3930.

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 2529509 is about 1590.4430200419. The cubic root of 2529509 is about 136.2527917953.

The spelling of 2529509 in words is "two million, five hundred twenty-nine thousand, five hundred nine".