284522881 has 2 divisors, whose sum is σ = 284522882. Its totient is φ = 284522880.

The previous prime is 284522869. The next prime is 284522899. The reversal of 284522881 is 188225482.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 147258225 + 137264656 = 12135^2 + 11716^2 .

It is a cyclic number.

It is not a de Polignac number, because 284522881 - 2⁷ = 284522753 is a prime.

It is a super-2 number, since 2×284522881² = 161906539625080322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (284522831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142261440 + 142261441.

It is an arithmetic number, because the mean of its divisors is an integer number (142261441).

Almost surely, 2^284522881 is an apocalyptic number.

It is an amenable number.

284522881 is a deficient number, since it is larger than the sum of its proper divisors (1).

284522881 is an equidigital number, since it uses as much as digits as its factorization.

284522881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81920, while the sum is 40.

The square root of 284522881 is about 16867.8060517662. The cubic root of 284522881 is about 657.7169979680.

The spelling of 284522881 in words is "two hundred eighty-four million, five hundred twenty-two thousand, eight hundred eighty-one".