1085285 has 4 divisors (see below), whose sum is σ = 1302348. Its totient is φ = 868224.

The previous prime is 1085269. The next prime is 1085309. The reversal of 1085285 is 5825801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5825801 = 1697 ⋅3433.

It can be written as a sum of positive squares in 2 ways, for example, as 521284 + 564001 = 722^2 + 751^2 .

It is a cyclic number.

It is not a de Polignac number, because 1085285 - 2⁴ = 1085269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108524 + ... + 108533.

It is an arithmetic number, because the mean of its divisors is an integer number (325587).

2^1085285 is an apocalyptic number.

It is an amenable number.

1085285 is a deficient number, since it is larger than the sum of its proper divisors (217063).

1085285 is an equidigital number, since it uses as much as digits as its factorization.

1085285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217062.

The product of its (nonzero) digits is 3200, while the sum is 29.

The square root of 1085285 is about 1041.7701281953. The cubic root of 1085285 is about 102.7656405330.

The spelling of 1085285 in words is "one million, eighty-five thousand, two hundred eighty-five".