2771205 has 16 divisors (see below), whose sum is σ = 4458240. Its totient is φ = 1469888.

The previous prime is 2771203. The next prime is 2771213. The reversal of 2771205 is 5021772.

It is a cyclic number.

It is not a de Polignac number, because 2771205 - 2¹ = 2771203 is a prime.

2771205 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2771203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3199 + ... + 3971.

It is an arithmetic number, because the mean of its divisors is an integer number (278640).

2^2771205 is an apocalyptic number.

It is an amenable number.

2771205 is a deficient number, since it is larger than the sum of its proper divisors (1687035).

2771205 is a wasteful number, since it uses less digits than its factorization.

2771205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020.

The product of its (nonzero) digits is 980, while the sum is 24.

The square root of 2771205 is about 1664.6936655133. The cubic root of 2771205 is about 140.4611494089.

Adding to 2771205 its reverse (5021772), we get a palindrome (7792977).

The spelling of 2771205 in words is "two million, seven hundred seventy-one thousand, two hundred five".