1387255 has 8 divisors (see below), whose sum is σ = 1680912. Its totient is φ = 1099008.

The previous prime is 1387231. The next prime is 1387259. The reversal of 1387255 is 5527831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1387255 - 2¹⁵ = 1354487 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 (1387259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 762 + ... + 1831.

It is an arithmetic number, because the mean of its divisors is an integer number (210114).

2^1387255 is an apocalyptic number.

1387255 is a deficient number, since it is larger than the sum of its proper divisors (293657).

1387255 is a wasteful number, since it uses less digits than its factorization.

1387255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2705.

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

The square root of 1387255 is about 1177.8178976395. The cubic root of 1387255 is about 111.5283900172.

The spelling of 1387255 in words is "one million, three hundred eighty-seven thousand, two hundred fifty-five".