2775285 has 12 divisors (see below), whose sum is σ = 4810572. Its totient is φ = 1480128.

The previous prime is 2775281. The next prime is 2775293. The reversal of 2775285 is 5825772.

It can be written as a sum of positive squares in 2 ways, for example, as 2099601 + 675684 = 1449^2 + 822^2 .

It is not a de Polignac number, because 2775285 - 2² = 2775281 is a prime.

2775285 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2775281) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30792 + ... + 30881.

It is an arithmetic number, because the mean of its divisors is an integer number (400881).

2^2775285 is an apocalyptic number.

It is an amenable number.

2775285 is a deficient number, since it is larger than the sum of its proper divisors (2035287).

2775285 is a wasteful number, since it uses less digits than its factorization.

2775285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61684 (or 61681 counting only the distinct ones).

The product of its digits is 39200, while the sum is 36.

The square root of 2775285 is about 1665.9186654816. The cubic root of 2775285 is about 140.5300484947.

The spelling of 2775285 in words is "two million, seven hundred seventy-five thousand, two hundred eighty-five".