2775311005 has 4 divisors (see below), whose sum is σ = 3330373212. Its totient is φ = 2220248800.

The previous prime is 2775310997. The next prime is 2775311023. The reversal of 2775311005 is 5001135772.

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 1773841689 + 1001469316 = 42117^2 + 31646^2 .

It is not a de Polignac number, because 2775311005 - 2³ = 2775310997 is a prime.

It is a super-2 number, since 2×2775311005² = 15404702348948220050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277531096 + ... + 277531105.

It is an arithmetic number, because the mean of its divisors is an integer number (832593303).

Almost surely, 2^2775311005 is an apocalyptic number.

It is an amenable number.

2775311005 is a deficient number, since it is larger than the sum of its proper divisors (555062207).

2775311005 is an equidigital number, since it uses as much as digits as its factorization.

2775311005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555062206.

The product of its (nonzero) digits is 7350, while the sum is 31.

The square root of 2775311005 is about 52681.2206103845. The cubic root of 2775311005 is about 1405.3048742535.

Adding to 2775311005 its reverse (5001135772), we get a palindrome (7776446777).

The spelling of 2775311005 in words is "two billion, seven hundred seventy-five million, three hundred eleven thousand, five".