5447148721 has 8 divisors (see below), whose sum is σ = 6591507840. Its totient is φ = 4394338368.

The previous prime is 5447148683. The next prime is 5447148737. The reversal of 5447148721 is 1278417445.

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

It is not a de Polignac number, because 5447148721 - 2¹⁹ = 5446624433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5447148761) 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, 22887061 + ... + 22887298.

It is an arithmetic number, because the mean of its divisors is an integer number (823938480).

Almost surely, 2^5447148721 is an apocalyptic number.

It is an amenable number.

5447148721 is a deficient number, since it is larger than the sum of its proper divisors (1144359119).

5447148721 is a wasteful number, since it uses less digits than its factorization.

5447148721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45774383.

The product of its digits is 250880, while the sum is 43.

The square root of 5447148721 is about 73804.8014765977. The cubic root of 5447148721 is about 1759.5019166693.

The spelling of 5447148721 in words is "five billion, four hundred forty-seven million, one hundred forty-eight thousand, seven hundred twenty-one".