1004004055 has 12 divisors (see below), whose sum is σ = 1209447720. Its totient is φ = 800119712.

The previous prime is 1004004049. The next prime is 1004004059. The reversal of 1004004055 is 5504004001.

It is not a de Polignac number, because 1004004055 - 2³ = 1004004047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1004004059) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 428076 + ... + 430414.

It is an arithmetic number, because the mean of its divisors is an integer number (100787310).

Almost surely, 2^1004004055 is an apocalyptic number.

1004004055 is a deficient number, since it is larger than the sum of its proper divisors (205443665).

1004004055 is an frugal number, since it uses more digits than its factorization.

1004004055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2930 (or 2637 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 1004004055 is about 31686.0230227777. The cubic root of 1004004055 is about 1001.3329075680.

Adding to 1004004055 its reverse (5504004001), we get a palindrome (6508008056).

The spelling of 1004004055 in words is "one billion, four million, four thousand, fifty-five".