284375561 has 2 divisors, whose sum is σ = 284375562. Its totient is φ = 284375560.

The previous prime is 284375471. The next prime is 284375587. The reversal of 284375561 is 165573482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 238393600 + 45981961 = 15440^2 + 6781^2 .

It is a cyclic number.

It is not a de Polignac number, because 284375561 - 2²² = 280181257 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (284375591) 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, 142187780 + 142187781.

It is an arithmetic number, because the mean of its divisors is an integer number (142187781).

Almost surely, 2^284375561 is an apocalyptic number.

It is an amenable number.

284375561 is a deficient number, since it is larger than the sum of its proper divisors (1).

284375561 is an equidigital number, since it uses as much as digits as its factorization.

284375561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 201600, while the sum is 41.

The square root of 284375561 is about 16863.4385876665. The cubic root of 284375561 is about 657.6034609993.

The spelling of 284375561 in words is "two hundred eighty-four million, three hundred seventy-five thousand, five hundred sixty-one".