285165105 has 32 divisors (see below), whose sum is σ = 472846464. Its totient is φ = 146635776.

The previous prime is 285165103. The next prime is 285165119. The reversal of 285165105 is 501561582.

It is not a de Polignac number, because 285165105 - 2¹ = 285165103 is a prime.

It is a super-2 number, since 2×285165105² = 162638274219322050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (285165103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60442 + ... + 64988.

It is an arithmetic number, because the mean of its divisors is an integer number (14776452).

Almost surely, 2^285165105 is an apocalyptic number.

It is an amenable number.

285165105 is a deficient number, since it is larger than the sum of its proper divisors (187681359).

285165105 is a wasteful number, since it uses less digits than its factorization.

285165105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4705.

The product of its (nonzero) digits is 12000, while the sum is 33.

The square root of 285165105 is about 16886.8322962005. The cubic root of 285165105 is about 658.2114915606.

The spelling of 285165105 in words is "two hundred eighty-five million, one hundred sixty-five thousand, one hundred five".