1330555 has 4 divisors (see below), whose sum is σ = 1596672. Its totient is φ = 1064440.

The previous prime is 1330547. The next prime is 1330559. The reversal of 1330555 is 5550331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5550331 = 1051 ⋅5281.

It is not a de Polignac number, because 1330555 - 2³ = 1330547 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 not an unprimeable number, because it can be changed into a prime (1330559) 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, 133051 + ... + 133060.

It is an arithmetic number, because the mean of its divisors is an integer number (399168).

2^1330555 is an apocalyptic number.

1330555 is a deficient number, since it is larger than the sum of its proper divisors (266117).

1330555 is an equidigital number, since it uses as much as digits as its factorization.

1330555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266116.

The product of its (nonzero) digits is 1125, while the sum is 22.

The square root of 1330555 is about 1153.4968573863. The cubic root of 1330555 is about 109.9877396804.

Adding to 1330555 its reverse (5550331), we get a palindrome (6880886).

The spelling of 1330555 in words is "one million, three hundred thirty thousand, five hundred fifty-five".