4544550021 has 8 divisors (see below), whose sum is σ = 6610254624. Its totient is φ = 2754272720.

The previous prime is 4544550019. The next prime is 4544550047. The reversal of 4544550021 is 1200554454.

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

It is a cyclic number.

It is not a de Polignac number, because 4544550021 - 2¹ = 4544550019 is a prime.

It is a super-2 number, since 2×4544550021² = 41305869786742200882, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4544550061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68856786 + ... + 68856851.

It is an arithmetic number, because the mean of its divisors is an integer number (826281828).

Almost surely, 2^4544550021 is an apocalyptic number.

It is an amenable number.

4544550021 is a deficient number, since it is larger than the sum of its proper divisors (2065704603).

4544550021 is a wasteful number, since it uses less digits than its factorization.

4544550021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137713651.

The product of its (nonzero) digits is 16000, while the sum is 30.

The square root of 4544550021 is about 67413.2777796778. The cubic root of 4544550021 is about 1656.3939262020.

The spelling of 4544550021 in words is "four billion, five hundred forty-four million, five hundred fifty thousand, twenty-one".