285147773 has 2 divisors, whose sum is σ = 285147774. Its totient is φ = 285147772.

The previous prime is 285147761. The next prime is 285147853. The reversal of 285147773 is 377741582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 280294564 + 4853209 = 16742^2 + 2203^2 .

It is a cyclic number.

It is not a de Polignac number, because 285147773 - 2⁴ = 285147757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (285147173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142573886 + 142573887.

It is an arithmetic number, because the mean of its divisors is an integer number (142573887).

Almost surely, 2^285147773 is an apocalyptic number.

It is an amenable number.

285147773 is a deficient number, since it is larger than the sum of its proper divisors (1).

285147773 is an equidigital number, since it uses as much as digits as its factorization.

285147773 is an evil number, because the sum of its binary digits is even.

The product of its digits is 329280, while the sum is 44.

The square root of 285147773 is about 16886.3191074905. The cubic root of 285147773 is about 658.1981561834.

The spelling of 285147773 in words is "two hundred eighty-five million, one hundred forty-seven thousand, seven hundred seventy-three".