1380055 has 4 divisors (see below), whose sum is σ = 1656072. Its totient is φ = 1104040.

The previous prime is 1380053. The next prime is 1380083. The reversal of 1380055 is 5500831.

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

It is not a de Polignac number, because 1380055 - 2¹ = 1380053 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380053) 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, 138001 + ... + 138010.

It is an arithmetic number, because the mean of its divisors is an integer number (414018).

2^1380055 is an apocalyptic number.

1380055 is a deficient number, since it is larger than the sum of its proper divisors (276017).

1380055 is an equidigital number, since it uses as much as digits as its factorization.

1380055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276016.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 1380055 is about 1174.7574217684. The cubic root of 1380055 is about 111.3351072024.

Adding to 1380055 its reverse (5500831), we get a palindrome (6880886).

The spelling of 1380055 in words is "one million, three hundred eighty thousand, fifty-five".