285053 has 4 divisors (see below), whose sum is σ = 289788. Its totient is φ = 280320.

The previous prime is 285049. The next prime is 285071. The reversal of 285053 is 350582.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 350582 = 2 ⋅175291.

It can be written as a sum of positive squares in 2 ways, for example, as 139129 + 145924 = 373^2 + 382^2 .

It is a cyclic number.

It is not a de Polignac number, because 285053 - 2² = 285049 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 285053.

It is not an unprimeable number, because it can be changed into a prime (285023) 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 in 3 ways as a sum of consecutive naturals, for example, 2276 + ... + 2397.

It is an arithmetic number, because the mean of its divisors is an integer number (72447).

2²⁸⁵⁰⁵³ is an apocalyptic number.

It is an amenable number.

285053 is a deficient number, since it is larger than the sum of its proper divisors (4735).

285053 is an equidigital number, since it uses as much as digits as its factorization.

285053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4734.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 285053 is about 533.9035493420. The cubic root of 285053 is about 65.8125227534.

The spelling of 285053 in words is "two hundred eighty-five thousand, fifty-three".