1355285 has 4 divisors (see below), whose sum is σ = 1626348. Its totient is φ = 1084224.

The previous prime is 1355281. The next prime is 1355293. The reversal of 1355285 is 5825531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5825531 = 229 ⋅25439.

It can be written as a sum of positive squares in 2 ways, for example, as 568516 + 786769 = 754^2 + 887^2 .

It is a cyclic number.

It is not a de Polignac number, because 1355285 - 2² = 1355281 is a prime.

It is a super-3 number, since 3×1355285³ = 7468152019733322375, which contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1355281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135524 + ... + 135533.

It is an arithmetic number, because the mean of its divisors is an integer number (406587).

2^1355285 is an apocalyptic number.

It is an amenable number.

1355285 is a deficient number, since it is larger than the sum of its proper divisors (271063).

1355285 is an equidigital number, since it uses as much as digits as its factorization.

1355285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271062.

The product of its digits is 6000, while the sum is 29.

The square root of 1355285 is about 1164.1670842280. The cubic root of 1355285 is about 110.6649801762.

The spelling of 1355285 in words is "one million, three hundred fifty-five thousand, two hundred eighty-five".