2355565 has 8 divisors (see below), whose sum is σ = 2842488. Its totient is φ = 1873920.

The previous prime is 2355559. The next prime is 2355581. The reversal of 2355565 is 5655532.

It can be written as a sum of positive squares in 4 ways, for example, as 5476 + 2350089 = 74^2 + 1533^2 .

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

It is not a de Polignac number, because 2355565 - 2³ = 2355557 is a prime.

It is a d-powerful number, because it can be written as 2²¹ + 3¹¹ + 5 + 5 + 5⁵ + 6 + 5⁷ .

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 256 + ... + 2185.

It is an arithmetic number, because the mean of its divisors is an integer number (355311).

2^2355565 is an apocalyptic number.

It is an amenable number.

2355565 is a deficient number, since it is larger than the sum of its proper divisors (486923).

2355565 is a wasteful number, since it uses less digits than its factorization.

2355565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2639.

The product of its digits is 22500, while the sum is 31.

The square root of 2355565 is about 1534.7850012298. The cubic root of 2355565 is about 133.0551526589.

The spelling of 2355565 in words is "two million, three hundred fifty-five thousand, five hundred sixty-five".