1180440055 has 4 divisors (see below), whose sum is σ = 1416528072. Its totient is φ = 944352040.

The previous prime is 1180440047. The next prime is 1180440071. The reversal of 1180440055 is 5500440811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5500440811 = 137 ⋅40149203.

It is not a de Polignac number, because 1180440055 - 2³ = 1180440047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118044001 + ... + 118044010.

It is an arithmetic number, because the mean of its divisors is an integer number (354132018).

Almost surely, 2^1180440055 is an apocalyptic number.

1180440055 is a deficient number, since it is larger than the sum of its proper divisors (236088017).

1180440055 is an equidigital number, since it uses as much as digits as its factorization.

1180440055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236088016.

The product of its (nonzero) digits is 3200, while the sum is 28.

The square root of 1180440055 is about 34357.5327257357. The cubic root of 1180440055 is about 1056.8531493040.

Adding to 1180440055 its reverse (5500440811), we get a palindrome (6680880866).

The spelling of 1180440055 in words is "one billion, one hundred eighty million, four hundred forty thousand, fifty-five".