284555 has 4 divisors (see below), whose sum is σ = 341472. Its totient is φ = 227640.

The previous prime is 284551. The next prime is 284561. The reversal of 284555 is 555482.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 555482 = 2 ⋅277741.

It is not a de Polignac number, because 284555 - 2² = 284551 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 284555.

It is not an unprimeable number, because it can be changed into a prime (284551) 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, 28451 + ... + 28460.

It is an arithmetic number, because the mean of its divisors is an integer number (85368).

2²⁸⁴⁵⁵⁵ is an apocalyptic number.

284555 is a deficient number, since it is larger than the sum of its proper divisors (56917).

284555 is an equidigital number, since it uses as much as digits as its factorization.

284555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56916.

The product of its digits is 8000, while the sum is 29.

The square root of 284555 is about 533.4369690976. The cubic root of 284555 is about 65.7741746320.

The spelling of 284555 in words is "two hundred eighty-four thousand, five hundred fifty-five".