285773 has 2 divisors, whose sum is σ = 285774. Its totient is φ = 285772.

The previous prime is 285767. The next prime is 285781. The reversal of 285773 is 377582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 157609 + 128164 = 397^2 + 358^2 .

It is a cyclic number.

It is not a de Polignac number, because 285773 - 2⁴ = 285757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (285763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142886 + 142887.

It is an arithmetic number, because the mean of its divisors is an integer number (142887).

2²⁸⁵⁷⁷³ is an apocalyptic number.

It is an amenable number.

285773 is a deficient number, since it is larger than the sum of its proper divisors (1).

285773 is an equidigital number, since it uses as much as digits as its factorization.

285773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11760, while the sum is 32.

The square root of 285773 is about 534.5774031887. The cubic root of 285773 is about 65.8678869331.

Subtracting 285773 from its reverse (377582), we obtain a square (91809 = 303²).

The spelling of 285773 in words is "two hundred eighty-five thousand, seven hundred seventy-three".