2771281047 has 4 divisors (see below), whose sum is σ = 3695041400. Its totient is φ = 1847520696.

The previous prime is 2771281039. The next prime is 2771281099. The reversal of 2771281047 is 7401821772.

2771281047 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2771281047 - 2³ = 2771281039 is a prime.

It is a super-2 number, since 2×2771281047² = 15359997282922832418, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2771280996 and 2771281014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2771286047) 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, 461880172 + ... + 461880177.

It is an arithmetic number, because the mean of its divisors is an integer number (923760350).

Almost surely, 2^2771281047 is an apocalyptic number.

2771281047 is a deficient number, since it is larger than the sum of its proper divisors (923760353).

2771281047 is an equidigital number, since it uses as much as digits as its factorization.

2771281047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923760352.

The product of its (nonzero) digits is 43904, while the sum is 39.

The square root of 2771281047 is about 52642.9581900562. The cubic root of 2771281047 is about 1404.6243423526.

The spelling of 2771281047 in words is "two billion, seven hundred seventy-one million, two hundred eighty-one thousand, forty-seven".