285041 has 4 divisors (see below), whose sum is σ = 294900. Its totient is φ = 275184.

The previous prime is 285031. The next prime is 285049. The reversal of 285041 is 140582.

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 211600 + 73441 = 460^2 + 271^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-285041 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 285041.

It is not an unprimeable number, because it can be changed into a prime (285049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4886 + ... + 4943.

It is an arithmetic number, because the mean of its divisors is an integer number (73725).

2²⁸⁵⁰⁴¹ is an apocalyptic number.

It is an amenable number.

285041 is a deficient number, since it is larger than the sum of its proper divisors (9859).

285041 is an equidigital number, since it uses as much as digits as its factorization.

285041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9858.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 285041 is about 533.8923112389. The cubic root of 285041 is about 65.8115992276.

The spelling of 285041 in words is "two hundred eighty-five thousand, forty-one".