288555 has 8 divisors (see below), whose sum is σ = 461712. Its totient is φ = 153888.

The previous prime is 288551. The next prime is 288559. The reversal of 288555 is 555882.

288555 = T₉₀ + T₉₁ + ... + T₁₃₄.

It is an interprime number because it is at equal distance from previous prime (288551) and next prime (288559).

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

It is not a de Polignac number, because 288555 - 2² = 288551 is a prime.

It is an Ulam number.

288555 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (288551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9604 + ... + 9633.

It is an arithmetic number, because the mean of its divisors is an integer number (57714).

2²⁸⁸⁵⁵⁵ is an apocalyptic number.

288555 is a deficient number, since it is larger than the sum of its proper divisors (173157).

288555 is a wasteful number, since it uses less digits than its factorization.

288555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19245.

The product of its digits is 16000, while the sum is 33.

The square root of 288555 is about 537.1731564403. The cubic root of 288555 is about 66.0809383508.

The spelling of 288555 in words is "two hundred eighty-eight thousand, five hundred fifty-five".