285320055 has 16 divisors (see below), whose sum is σ = 480539520. Its totient is φ = 144161568.

The previous prime is 285320029. The next prime is 285320059. The reversal of 285320055 is 550023582.

It is not a de Polignac number, because 285320055 - 2⁵ = 285320023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285320059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 500277 + ... + 500846.

It is an arithmetic number, because the mean of its divisors is an integer number (30033720).

Almost surely, 2^285320055 is an apocalyptic number.

285320055 is a deficient number, since it is larger than the sum of its proper divisors (195219465).

285320055 is a wasteful number, since it uses less digits than its factorization.

285320055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001150.

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 285320055 is about 16891.4195673425. The cubic root of 285320055 is about 658.3306873080.

The spelling of 285320055 in words is "two hundred eighty-five million, three hundred twenty thousand, fifty-five".