288545 has 4 divisors (see below), whose sum is σ = 346260. Its totient is φ = 230832.

The previous prime is 288539. The next prime is 288551. The reversal of 288545 is 545882.

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

It is an interprime number because it is at equal distance from previous prime (288539) and next prime (288551).

It can be written as a sum of positive squares in 2 ways, for example, as 54289 + 234256 = 233^2 + 484^2 .

It is a cyclic number.

It is not a de Polignac number, because 288545 - 2⁴ = 288529 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 288545.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28850 + ... + 28859.

It is an arithmetic number, because the mean of its divisors is an integer number (86565).

2²⁸⁸⁵⁴⁵ is an apocalyptic number.

It is an amenable number.

288545 is a deficient number, since it is larger than the sum of its proper divisors (57715).

288545 is an equidigital number, since it uses as much as digits as its factorization.

288545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57714.

The product of its digits is 12800, while the sum is 32.

The square root of 288545 is about 537.1638483740. The cubic root of 288545 is about 66.0801749874.

The spelling of 288545 in words is "two hundred eighty-eight thousand, five hundred forty-five".