283565 has 4 divisors (see below), whose sum is σ = 340284. Its totient is φ = 226848.

The previous prime is 283553. The next prime is 283571. The reversal of 283565 is 565382.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 565382 = 2 ⋅282691.

It can be written as a sum of positive squares in 2 ways, for example, as 145924 + 137641 = 382^2 + 371^2 .

It is a cyclic number.

It is not a de Polignac number, because 283565 - 2⁶ = 283501 is a prime.

It is a d-powerful number, because it can be written as 2⁷ + 8 + 5³ + 3⁵ + 6⁷ + 5⁵ .

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28352 + ... + 28361.

It is an arithmetic number, because the mean of its divisors is an integer number (85071).

2²⁸³⁵⁶⁵ is an apocalyptic number.

It is an amenable number.

283565 is a deficient number, since it is larger than the sum of its proper divisors (56719).

283565 is an equidigital number, since it uses as much as digits as its factorization.

283565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56718.

The product of its digits is 7200, while the sum is 29.

The square root of 283565 is about 532.5082158991. The cubic root of 283565 is about 65.6978073274.

It can be divided in two parts, 283 and 565, that multiplied together give a triangular number (159895 = T₅₆₅).

The spelling of 283565 in words is "two hundred eighty-three thousand, five hundred sixty-five".