285655361 has 2 divisors, whose sum is σ = 285655362. Its totient is φ = 285655360.

The previous prime is 285655343. The next prime is 285655399. The reversal of 285655361 is 163556582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 172764736 + 112890625 = 13144^2 + 10625^2 .

It is a cyclic number.

It is not a de Polignac number, because 285655361 - 2¹⁰ = 285654337 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (285655661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142827680 + 142827681.

It is an arithmetic number, because the mean of its divisors is an integer number (142827681).

Almost surely, 2^285655361 is an apocalyptic number.

It is an amenable number.

285655361 is a deficient number, since it is larger than the sum of its proper divisors (1).

285655361 is an equidigital number, since it uses as much as digits as its factorization.

285655361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216000, while the sum is 41.

The square root of 285655361 is about 16901.3419881381. The cubic root of 285655361 is about 658.5884747885.

The spelling of 285655361 in words is "two hundred eighty-five million, six hundred fifty-five thousand, three hundred sixty-one".