2573261209 has 4 divisors (see below), whose sum is σ = 2596869220. Its totient is φ = 2549653200.

The previous prime is 2573261203. The next prime is 2573261213. The reversal of 2573261209 is 9021623752.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1561830400 + 1011430809 = 39520^2 + 31803^2 .

It is a cyclic number.

It is not a de Polignac number, because 2573261209 - 2²³ = 2564872601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2573261203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11803842 + ... + 11804059.

It is an arithmetic number, because the mean of its divisors is an integer number (649217305).

Almost surely, 2^2573261209 is an apocalyptic number.

It is an amenable number.

2573261209 is a deficient number, since it is larger than the sum of its proper divisors (23608011).

2573261209 is a wasteful number, since it uses less digits than its factorization.

2573261209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23608010.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 2573261209 is about 50727.3221154044. The cubic root of 2573261209 is about 1370.3388099464.

The spelling of 2573261209 in words is "two billion, five hundred seventy-three million, two hundred sixty-one thousand, two hundred nine".