1385255 has 4 divisors (see below), whose sum is σ = 1662312. Its totient is φ = 1108200.

The previous prime is 1385213. The next prime is 1385273. The reversal of 1385255 is 5525831.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1385255 - 2⁶ = 1385191 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, 138521 + ... + 138530.

It is an arithmetic number, because the mean of its divisors is an integer number (415578).

2^1385255 is an apocalyptic number.

1385255 is a deficient number, since it is larger than the sum of its proper divisors (277057).

1385255 is an equidigital number, since it uses as much as digits as its factorization.

1385255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277056.

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

The square root of 1385255 is about 1176.9685637263. The cubic root of 1385255 is about 111.4747675615.

The spelling of 1385255 in words is "one million, three hundred eighty-five thousand, two hundred fifty-five".