283221161 has 2 divisors, whose sum is σ = 283221162. Its totient is φ = 283221160.

The previous prime is 283221151. The next prime is 283221167. The reversal of 283221161 is 161122382.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 273703936 + 9517225 = 16544^2 + 3085^2 .

It is a cyclic number.

It is not a de Polignac number, because 283221161 - 2⁶ = 283221097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 283221161.

It is not a weakly prime, because it can be changed into another prime (283221167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 141610580 + 141610581.

It is an arithmetic number, because the mean of its divisors is an integer number (141610581).

Almost surely, 2^283221161 is an apocalyptic number.

It is an amenable number.

283221161 is a deficient number, since it is larger than the sum of its proper divisors (1).

283221161 is an equidigital number, since it uses as much as digits as its factorization.

283221161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 26.

The square root of 283221161 is about 16829.1758859428. The cubic root of 283221161 is about 656.7124245415.

It can be divided in two parts, 283221 and 161, that added together give a palindrome (283382).

The spelling of 283221161 in words is "two hundred eighty-three million, two hundred twenty-one thousand, one hundred sixty-one".