2547530209 has 16 divisors (see below), whose sum is σ = 3067564032. Its totient is φ = 2068366608.

The previous prime is 2547530159. The next prime is 2547530221. The reversal of 2547530209 is 9020357452.

It is not a de Polignac number, because 2547530209 - 2²¹ = 2545433057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2547530509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60229 + ... + 93394.

It is an arithmetic number, because the mean of its divisors is an integer number (191722752).

Almost surely, 2^2547530209 is an apocalyptic number.

It is an amenable number.

2547530209 is a deficient number, since it is larger than the sum of its proper divisors (520033823).

2547530209 is a wasteful number, since it uses less digits than its factorization.

2547530209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153756.

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 2547530209 is about 50473.0641926959. The cubic root of 2547530209 is about 1365.7559908554.

The spelling of 2547530209 in words is "two billion, five hundred forty-seven million, five hundred thirty thousand, two hundred nine".