285492197 has 2 divisors, whose sum is σ = 285492198. Its totient is φ = 285492196.

The previous prime is 285492191. The next prime is 285492223. The reversal of 285492197 is 791294582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 175536001 + 109956196 = 13249^2 + 10486^2 .

It is a cyclic number.

It is not a de Polignac number, because 285492197 - 2⁶ = 285492133 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (285492191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142746098 + 142746099.

It is an arithmetic number, because the mean of its divisors is an integer number (142746099).

Almost surely, 2^285492197 is an apocalyptic number.

It is an amenable number.

285492197 is a deficient number, since it is larger than the sum of its proper divisors (1).

285492197 is an equidigital number, since it uses as much as digits as its factorization.

285492197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 47.

The square root of 285492197 is about 16896.5143446807. The cubic root of 285492197 is about 658.4630574607.

The spelling of 285492197 in words is "two hundred eighty-five million, four hundred ninety-two thousand, one hundred ninety-seven".