2287565 has 12 divisors (see below), whose sum is σ = 3193596. Its totient is φ = 1568448.

The previous prime is 2287559. The next prime is 2287577. The reversal of 2287565 is 5657822.

It can be written as a sum of positive squares in 2 ways, for example, as 1605289 + 682276 = 1267^2 + 826^2 .

It is not a de Polignac number, because 2287565 - 2⁶ = 2287501 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an Ulam number.

It is a d-powerful number, because it can be written as 2 + 2¹⁹ + 8 + 7⁴ + 5⁵ + 6⁸ + 5⁷ .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4424 + ... + 4913.

It is an arithmetic number, because the mean of its divisors is an integer number (266133).

2^2287565 is an apocalyptic number.

It is an amenable number.

2287565 is a deficient number, since it is larger than the sum of its proper divisors (906031).

2287565 is an equidigital number, since it uses as much as digits as its factorization.

2287565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9356 (or 9349 counting only the distinct ones).

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

The square root of 2287565 is about 1512.4698344099. The cubic root of 2287565 is about 131.7622941118.

The spelling of 2287565 in words is "two million, two hundred eighty-seven thousand, five hundred sixty-five".