5555044021 has 8 divisors (see below), whose sum is σ = 5620247424. Its totient is φ = 5490214800.

The previous prime is 5555044009. The next prime is 5555044043. The reversal of 5555044021 is 1204405555.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5555044021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5555044081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63625 + ... + 123118.

It is an arithmetic number, because the mean of its divisors is an integer number (702530928).

Almost surely, 2^5555044021 is an apocalyptic number.

It is an amenable number.

5555044021 is a deficient number, since it is larger than the sum of its proper divisors (65203403).

5555044021 is a wasteful number, since it uses less digits than its factorization.

5555044021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187091.

The product of its (nonzero) digits is 20000, while the sum is 31.

The square root of 5555044021 is about 74532.1676928828. The cubic root of 5555044021 is about 1771.0432549780.

Adding to 5555044021 its reverse (1204405555), we get a palindrome (6759449576).

The spelling of 5555044021 in words is "five billion, five hundred fifty-five million, forty-four thousand, twenty-one".