285562161 has 6 divisors (see below), whose sum is σ = 412478690. Its totient is φ = 190374768.

The previous prime is 285562139. The next prime is 285562223. The reversal of 285562161 is 161265582.

285562161 is a `hidden beast` number, since 2 + 85 + 562 + 16 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 281736225 + 3825936 = 16785^2 + 1956^2 .

It is not a de Polignac number, because 285562161 - 2⁵ = 285562129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (285562261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15864556 + ... + 15864573.

Almost surely, 2^285562161 is an apocalyptic number.

It is an amenable number.

285562161 is a deficient number, since it is larger than the sum of its proper divisors (126916529).

285562161 is a wasteful number, since it uses less digits than its factorization.

285562161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31729135 (or 31729132 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 285562161 is about 16898.5845856983. The cubic root of 285562161 is about 658.5168417055.

The spelling of 285562161 in words is "two hundred eighty-five million, five hundred sixty-two thousand, one hundred sixty-one".