5548507447729 has 3 divisors (see below), whose sum is σ = 5548509803257. Its totient is φ = 5548505092202.

The previous prime is 5548507447711. The next prime is 5548507447781. The reversal of 5548507447729 is 9277447058455.

The square root of 5548507447729 is 2355527.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a de Polignac number, because none of the positive numbers 2^k-5548507447729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5548507447529) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1177764 + ... + 3533290.

Almost surely, 2^{5548507447729} is an apocalyptic number.

5548507447729 is the 2355527-th square number.

5548507447729 is the 1177764-th centered octagonal number.

It is an amenable number.

5548507447729 is a deficient number, since it is larger than the sum of its proper divisors (2355528).

5548507447729 is an frugal number, since it uses more digits than its factorization.

5548507447729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4711054 (or 2355527 counting only the distinct ones).

The product of its (nonzero) digits is 395136000, while the sum is 67.

The spelling of 5548507447729 in words is "five trillion, five hundred forty-eight billion, five hundred seven million, four hundred forty-seven thousand, seven hundred twenty-nine".