2587265 has 8 divisors (see below), whose sum is σ = 3113640. Its totient is φ = 2063872.

The previous prime is 2587253. The next prime is 2587271. The reversal of 2587265 is 5627852.

2587265 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 150544 + 2436721 = 388^2 + 1561^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2587265 - 2¹² = 2583169 is a prime.

It is a d-powerful number, because it can be written as 2¹⁷ + 5³ + 8³ + 7³ + 2²¹ + 6⁷ + 5⁷ .

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 7 ways as a sum of consecutive naturals, for example, 2321 + ... + 3249.

It is an arithmetic number, because the mean of its divisors is an integer number (389205).

2^2587265 is an apocalyptic number.

2587265 is the 929-th octagonal number.

It is an amenable number.

2587265 is a deficient number, since it is larger than the sum of its proper divisors (526375).

2587265 is an equidigital number, since it uses as much as digits as its factorization.

2587265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1491.

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

The square root of 2587265 is about 1608.4977463459. The cubic root of 2587265 is about 137.2820127206.

The spelling of 2587265 in words is "two million, five hundred eighty-seven thousand, two hundred sixty-five".