285563055 has 16 divisors (see below), whose sum is σ = 476766720. Its totient is φ = 145678368.

The previous prime is 285563051. The next prime is 285563107. The reversal of 285563055 is 550365582.

It is not a de Polignac number, because 285563055 - 2² = 285563051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285563051) 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, 413515 + ... + 414204.

It is an arithmetic number, because the mean of its divisors is an integer number (29797920).

Almost surely, 2^285563055 is an apocalyptic number.

285563055 is a deficient number, since it is larger than the sum of its proper divisors (191203665).

285563055 is a wasteful number, since it uses less digits than its factorization.

285563055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 827750.

The product of its (nonzero) digits is 180000, while the sum is 39.

The square root of 285563055 is about 16898.6110375971. The cubic root of 285563055 is about 658.5175289037.

The spelling of 285563055 in words is "two hundred eighty-five million, five hundred sixty-three thousand, fifty-five".