285941 has 4 divisors (see below), whose sum is σ = 289932. Its totient is φ = 281952.

The previous prime is 285937. The next prime is 285949. The reversal of 285941 is 149582.

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 198916 + 87025 = 446^2 + 295^2 .

It is a cyclic number.

It is not a de Polignac number, because 285941 - 2² = 285937 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1886 + ... + 2031.

It is an arithmetic number, because the mean of its divisors is an integer number (72483).

2²⁸⁵⁹⁴¹ is an apocalyptic number.

It is an amenable number.

285941 is a deficient number, since it is larger than the sum of its proper divisors (3991).

285941 is an equidigital number, since it uses as much as digits as its factorization.

285941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3990.

The product of its digits is 2880, while the sum is 29.

The square root of 285941 is about 534.7345135672. The cubic root of 285941 is about 65.8807918579.

The spelling of 285941 in words is "two hundred eighty-five thousand, nine hundred forty-one".