284505497 has 2 divisors, whose sum is σ = 284505498. Its totient is φ = 284505496.

The previous prime is 284505479. The next prime is 284505503. The reversal of 284505497 is 794505482.

It is a happy number.

Together with previous prime (284505479) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 233967616 + 50537881 = 15296^2 + 7109^2 .

It is a cyclic number.

It is not a de Polignac number, because 284505497 - 2⁶ = 284505433 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (284505427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142252748 + 142252749.

It is an arithmetic number, because the mean of its divisors is an integer number (142252749).

Almost surely, 2^284505497 is an apocalyptic number.

It is an amenable number.

284505497 is a deficient number, since it is larger than the sum of its proper divisors (1).

284505497 is an equidigital number, since it uses as much as digits as its factorization.

284505497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 403200, while the sum is 44.

The square root of 284505497 is about 16867.2907427364. The cubic root of 284505497 is about 657.7036024605.

The spelling of 284505497 in words is "two hundred eighty-four million, five hundred five thousand, four hundred ninety-seven".