285055566 has 16 divisors (see below), whose sum is σ = 570338688. Its totient is φ = 94980600.

The previous prime is 285055553. The next prime is 285055567. The reversal of 285055566 is 665550582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285055567) 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, 9831 + ... + 25821.

It is an arithmetic number, because the mean of its divisors is an integer number (35646168).

Almost surely, 2^285055566 is an apocalyptic number.

285055566 is an abundant number, since it is smaller than the sum of its proper divisors (285283122).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

285055566 is a wasteful number, since it uses less digits than its factorization.

285055566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18967.

The product of its (nonzero) digits is 360000, while the sum is 42.

The square root of 285055566 is about 16883.5886588130. The cubic root of 285055566 is about 658.1272023061.

The spelling of 285055566 in words is "two hundred eighty-five million, fifty-five thousand, five hundred sixty-six".