285955 has 4 divisors (see below), whose sum is σ = 343152. Its totient is φ = 228760.

The previous prime is 285953. The next prime is 285977. The reversal of 285955 is 559582.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 285955 - 2¹ = 285953 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 285955.

It is not an unprimeable number, because it can be changed into a prime (285953) 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, 28591 + ... + 28600.

It is an arithmetic number, because the mean of its divisors is an integer number (85788).

2²⁸⁵⁹⁵⁵ is an apocalyptic number.

285955 is a deficient number, since it is larger than the sum of its proper divisors (57197).

285955 is an equidigital number, since it uses as much as digits as its factorization.

285955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57196.

The product of its digits is 18000, while the sum is 34.

The square root of 285955 is about 534.7476040152. The cubic root of 285955 is about 65.8818670401.

The spelling of 285955 in words is "two hundred eighty-five thousand, nine hundred fifty-five".