284557249 has 2 divisors, whose sum is σ = 284557250. Its totient is φ = 284557248.

The previous prime is 284557213. The next prime is 284557267. The reversal of 284557249 is 942755482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 240095025 + 44462224 = 15495^2 + 6668^2 .

It is a cyclic number.

It is not a de Polignac number, because 284557249 - 2²¹ = 282460097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 284557199 and 284557208.

It is not a weakly prime, because it can be changed into another prime (284557549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142278624 + 142278625.

It is an arithmetic number, because the mean of its divisors is an integer number (142278625).

Almost surely, 2^284557249 is an apocalyptic number.

It is an amenable number.

284557249 is a deficient number, since it is larger than the sum of its proper divisors (1).

284557249 is an equidigital number, since it uses as much as digits as its factorization.

284557249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 806400, while the sum is 46.

The square root of 284557249 is about 16868.8247664145. The cubic root of 284557249 is about 657.7434791514.

The spelling of 284557249 in words is "two hundred eighty-four million, five hundred fifty-seven thousand, two hundred forty-nine".