2857265 has 4 divisors (see below), whose sum is σ = 3428724. Its totient is φ = 2285808.

The previous prime is 2857259. The next prime is 2857297. The reversal of 2857265 is 5627582.

2857265 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 can be written as a sum of positive squares in 2 ways, for example, as 1175056 + 1682209 = 1084^2 + 1297^2 .

It is a cyclic number.

It is not a de Polignac number, because 2857265 - 2⁸ = 2857009 is a prime.

It is a d-powerful number, because it can be written as 2¹² + 8² + 5⁵ + 7⁷ + 2¹⁶ + 6⁵ + 5⁹ .

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 285722 + ... + 285731.

It is an arithmetic number, because the mean of its divisors is an integer number (857181).

2^2857265 is an apocalyptic number.

It is an amenable number.

2857265 is a deficient number, since it is larger than the sum of its proper divisors (571459).

2857265 is an equidigital number, since it uses as much as digits as its factorization.

2857265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571458.

The product of its digits is 33600, while the sum is 35.

The square root of 2857265 is about 1690.3446394153. The cubic root of 2857265 is about 141.9003632196.

The spelling of 2857265 in words is "two million, eight hundred fifty-seven thousand, two hundred sixty-five".