55002004 has 12 divisors (see below), whose sum is σ = 101915604. Its totient is φ = 25883264.

The previous prime is 55001981. The next prime is 55002011. The reversal of 55002004 is 40020055.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 31382404 + 23619600 = 5602^2 + 4860^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 404359 + ... + 404494.

It is an arithmetic number, because the mean of its divisors is an integer number (8492967).

Almost surely, 2^55002004 is an apocalyptic number.

It is an amenable number.

55002004 is a deficient number, since it is larger than the sum of its proper divisors (46913600).

55002004 is a wasteful number, since it uses less digits than its factorization.

55002004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808874 (or 808872 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 16.

The square root of 55002004 is about 7416.3335955174. Note that the first 3 decimals coincide. The cubic root of 55002004 is about 380.2998648787.

Adding to 55002004 its reverse (40020055), we get a palindrome (95022059).

The spelling of 55002004 in words is "fifty-five million, two thousand, four".