285555 has 8 divisors (see below), whose sum is σ = 456912. Its totient is φ = 152288.

The previous prime is 285553. The next prime is 285557. The reversal of 285555 is 555582.

It is an interprime number because it is at equal distance from previous prime (285553) and next prime (285557).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 285555 - 2¹ = 285553 is a prime.

285555 is a modest number, since divided by 555 gives 285 as remainder.

It is not an unprimeable number, because it can be changed into a prime (285553) 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 7 ways as a sum of consecutive naturals, for example, 9504 + ... + 9533.

It is an arithmetic number, because the mean of its divisors is an integer number (57114).

2²⁸⁵⁵⁵⁵ is an apocalyptic number.

285555 is a deficient number, since it is larger than the sum of its proper divisors (171357).

285555 is a wasteful number, since it uses less digits than its factorization.

285555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19045.

The product of its digits is 10000, while the sum is 30.

The square root of 285555 is about 534.3734649101. The cubic root of 285555 is about 65.8511337150.

The spelling of 285555 in words is "two hundred eighty-five thousand, five hundred fifty-five".