285165441 has 40 divisors (see below), whose sum is σ = 466823808. Its totient is φ = 172044000.

The previous prime is 285165427. The next prime is 285165443. The reversal of 285165441 is 144561582.

It is a happy number.

It is not a de Polignac number, because 285165441 - 2⁵ = 285165409 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 285165396 and 285165405.

It is not an unprimeable number, because it can be changed into a prime (285165443) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 240871 + ... + 242051.

Almost surely, 2^285165441 is an apocalyptic number.

It is an amenable number.

285165441 is a deficient number, since it is larger than the sum of its proper divisors (181658367).

285165441 is a wasteful number, since it uses less digits than its factorization.

285165441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1475 (or 1466 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 285165441 is about 16886.8422447774. The cubic root of 285165441 is about 658.2117500763.

The spelling of 285165441 in words is "two hundred eighty-five million, one hundred sixty-five thousand, four hundred forty-one".