1355287 has 4 divisors (see below), whose sum is σ = 1360360. Its totient is φ = 1350216.

The previous prime is 1355281. The next prime is 1355293. The reversal of 1355287 is 7825531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7825531 = 7 ⋅1117933.

It is an interprime number because it is at equal distance from previous prime (1355281) and next prime (1355293).

It is a cyclic number.

It is not a de Polignac number, because 1355287 - 2³ = 1355279 is a prime.

It is a Duffinian 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 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, 2112 + ... + 2677.

It is an arithmetic number, because the mean of its divisors is an integer number (340090).

2^1355287 is an apocalyptic number.

1355287 is a deficient number, since it is larger than the sum of its proper divisors (5073).

1355287 is an equidigital number, since it uses as much as digits as its factorization.

1355287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5072.

The product of its digits is 8400, while the sum is 31.

The square root of 1355287 is about 1164.1679432109. The cubic root of 1355287 is about 110.6650346125.

The spelling of 1355287 in words is "one million, three hundred fifty-five thousand, two hundred eighty-seven".