4551721043 has 8 divisors (see below), whose sum is σ = 4596875712. Its totient is φ = 4506615016.

The previous prime is 4551721033. The next prime is 4551721061. The reversal of 4551721043 is 3401271554.

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 4551721043 - 2⁸ = 4551720787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4551721003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192896 + ... + 215202.

It is an arithmetic number, because the mean of its divisors is an integer number (574609464).

Almost surely, 2^4551721043 is an apocalyptic number.

4551721043 is a deficient number, since it is larger than the sum of its proper divisors (45154669).

4551721043 is a wasteful number, since it uses less digits than its factorization.

4551721043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24321.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 4551721043 is about 67466.4438295068. The cubic root of 4551721043 is about 1657.2646977926.

Adding to 4551721043 its reverse (3401271554), we get a palindrome (7952992597).

The spelling of 4551721043 in words is "four billion, five hundred fifty-one million, seven hundred twenty-one thousand, forty-three".