284261 has 2 divisors, whose sum is σ = 284262. Its totient is φ = 284260.

The previous prime is 284243. The next prime is 284267. The reversal of 284261 is 162482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 231361 + 52900 = 481^2 + 230^2 .

It is a cyclic number.

It is not a de Polignac number, because 284261 - 2¹⁴ = 267877 is a prime.

It is a super-2 number, since 2×284261² = 161608632242, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 284261.

It is not a weakly prime, because it can be changed into another prime (284267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142130 + 142131.

It is an arithmetic number, because the mean of its divisors is an integer number (142131).

2²⁸⁴²⁶¹ is an apocalyptic number.

It is an amenable number.

284261 is a deficient number, since it is larger than the sum of its proper divisors (1).

284261 is an equidigital number, since it uses as much as digits as its factorization.

284261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 768, while the sum is 23.

The square root of 284261 is about 533.1613264294. The cubic root of 284261 is about 65.7515143719.

It can be divided in two parts, 284 and 261, that added together give a palindrome (545).

The spelling of 284261 in words is "two hundred eighty-four thousand, two hundred sixty-one".