2771285449 has 9 divisors (see below), whose sum is σ = 2820729639. Its totient is φ = 2722695960.

The previous prime is 2771285357. The next prime is 2771285453. The reversal of 2771285449 is 9445821772.

The square root of 2771285449 is 52643.

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., 90117049 + 2681168400 = 9493^2 + 51780^2 .

It is not a de Polignac number, because 2771285449 - 2²⁹ = 2234414537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2771288449) 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, 3210792 + ... + 3211654.

Almost surely, 2^2771285449 is an apocalyptic number.

2771285449 is the 52643-rd square number.

2771285449 is the 26322-nd centered octagonal number.

It is an amenable number.

2771285449 is a deficient number, since it is larger than the sum of its proper divisors (49444190).

2771285449 is an frugal number, since it uses more digits than its factorization.

2771285449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1848 (or 924 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 49.

The cubic root of 2771285449 is about 1404.6250860704.

Multiplying 2771285449 by its sum of digits (49), we get a square (135792987001 = 368501²).

The spelling of 2771285449 in words is "two billion, seven hundred seventy-one million, two hundred eighty-five thousand, four hundred forty-nine".