1386555 has 16 divisors (see below), whose sum is σ = 2315520. Its totient is φ = 707168.

The previous prime is 1386551. The next prime is 1386557. The reversal of 1386555 is 5556831.

It is a cyclic number.

It is not a de Polignac number, because 1386555 - 2² = 1386551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1386551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1665 + ... + 2354.

It is an arithmetic number, because the mean of its divisors is an integer number (144720).

2^1386555 is an apocalyptic number.

1386555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1386555 is a deficient number, since it is larger than the sum of its proper divisors (928965).

1386555 is a wasteful number, since it uses less digits than its factorization.

1386555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4050.

The product of its digits is 18000, while the sum is 33.

The square root of 1386555 is about 1177.5207004550. The cubic root of 1386555 is about 111.5096280237.

It can be divided in two parts, 13 and 86555, that added together give a palindrome (86568).

The spelling of 1386555 in words is "one million, three hundred eighty-six thousand, five hundred fifty-five".