2520341209 has 9 divisors (see below), whose sum is σ = 2565452799. Its totient is φ = 2476011960.

The previous prime is 2520341177. The next prime is 2520341221. The reversal of 2520341209 is 9021430252.

The square root of 2520341209 is 50203.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 81956809 + 2438384400 = 9053^2 + 49380^2 .

It is not a de Polignac number, because 2520341209 - 2⁵ = 2520341177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2520381209) 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 8 ways as a sum of consecutive naturals, for example, 3061972 + ... + 3062794.

It is an arithmetic number, because the mean of its divisors is an integer number (285050311).

Almost surely, 2^2520341209 is an apocalyptic number.

2520341209 is the 50203-rd square number.

2520341209 is the 25102-nd centered octagonal number.

It is an amenable number.

2520341209 is a deficient number, since it is larger than the sum of its proper divisors (45111590).

2520341209 is an frugal number, since it uses more digits than its factorization.

2520341209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1768 (or 884 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The cubic root of 2520341209 is about 1360.8798388704.

The spelling of 2520341209 in words is "two billion, five hundred twenty million, three hundred forty-one thousand, two hundred nine".