2544365161 has 4 divisors (see below), whose sum is σ = 2740085572. Its totient is φ = 2348644752.

The previous prime is 2544365119. The next prime is 2544365171. The reversal of 2544365161 is 1615634452.

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 264875625 + 2279489536 = 16275^2 + 47744^2 .

It is a cyclic number.

It is not a de Polignac number, because 2544365161 - 2¹⁷ = 2544234089 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2544365161.

It is not an unprimeable number, because it can be changed into a prime (2544365111) 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, 97860186 + ... + 97860211.

It is an arithmetic number, because the mean of its divisors is an integer number (685021393).

Almost surely, 2^2544365161 is an apocalyptic number.

It is an amenable number.

2544365161 is a deficient number, since it is larger than the sum of its proper divisors (195720411).

2544365161 is a wasteful number, since it uses less digits than its factorization.

2544365161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195720410.

The product of its digits is 86400, while the sum is 37.

The square root of 2544365161 is about 50441.7006156612. The cubic root of 2544365161 is about 1365.1901520083.

The spelling of 2544365161 in words is "two billion, five hundred forty-four million, three hundred sixty-five thousand, one hundred sixty-one".