285512241 has 32 divisors (see below), whose sum is σ = 444764160. Its totient is φ = 159554304.

The previous prime is 285512237. The next prime is 285512257. The reversal of 285512241 is 142215582.

It is not a de Polignac number, because 285512241 - 2² = 285512237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 285512199 and 285512208.

It is not an unprimeable number, because it can be changed into a prime (285511241) 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, 186706 + ... + 188228.

It is an arithmetic number, because the mean of its divisors is an integer number (13898880).

Almost surely, 2^285512241 is an apocalyptic number.

285512241 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

285512241 is a deficient number, since it is larger than the sum of its proper divisors (159251919).

285512241 is a wasteful number, since it uses less digits than its factorization.

285512241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1725.

The product of its digits is 6400, while the sum is 30.

The square root of 285512241 is about 16897.1074743579. The cubic root of 285512241 is about 658.4784670175.

The spelling of 285512241 in words is "two hundred eighty-five million, five hundred twelve thousand, two hundred forty-one".