2773161121 has 4 divisors (see below), whose sum is σ = 2777685652. Its totient is φ = 2768636592.

The previous prime is 2773161119. The next prime is 2773161133. The reversal of 2773161121 is 1211613772.

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 324000000 + 2449161121 = 18000^2 + 49489^2 .

It is a cyclic number.

It is not a de Polignac number, because 2773161121 - 2¹ = 2773161119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2773161151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2261346 + ... + 2262571.

It is an arithmetic number, because the mean of its divisors is an integer number (694421413).

Almost surely, 2^2773161121 is an apocalyptic number.

It is an amenable number.

2773161121 is a deficient number, since it is larger than the sum of its proper divisors (4524531).

2773161121 is an equidigital number, since it uses as much as digits as its factorization.

2773161121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4524530.

The product of its digits is 3528, while the sum is 31.

The square root of 2773161121 is about 52660.8120047536. The cubic root of 2773161121 is about 1404.9419091748.

Adding to 2773161121 its reverse (1211613772), we get a palindrome (3984774893).

The spelling of 2773161121 in words is "two billion, seven hundred seventy-three million, one hundred sixty-one thousand, one hundred twenty-one".