283145 has 4 divisors (see below), whose sum is σ = 339780. Its totient is φ = 226512.

The previous prime is 283139. The next prime is 283159. The reversal of 283145 is 541382.

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 107584 + 175561 = 328^2 + 419^2 .

It is a cyclic number.

It is not a de Polignac number, because 283145 - 2⁸ = 282889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 283145.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 283145.

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, 28310 + ... + 28319.

It is an arithmetic number, because the mean of its divisors is an integer number (84945).

2²⁸³¹⁴⁵ is an apocalyptic number.

It is an amenable number.

283145 is a deficient number, since it is larger than the sum of its proper divisors (56635).

283145 is an equidigital number, since it uses as much as digits as its factorization.

283145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56634.

The product of its digits is 960, while the sum is 23.

The square root of 283145 is about 532.1137096524. The cubic root of 283145 is about 65.6653553753.

The spelling of 283145 in words is "two hundred eighty-three thousand, one hundred forty-five".