5474387947081 has 3 divisors (see below), whose sum is σ = 5474390286823. Its totient is φ = 5474385607340.

The previous prime is 5474387947057. The next prime is 5474387947087. The reversal of 5474387947081 is 1807497834745.

The square root of 5474387947081 is 2339741.

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 can be written as a sum of positive squares in only one way, i.e., 3566398257081 + 1907989690000 = 1888491^2 + 1381300^2 .

It is not a de Polignac number, because 5474387947081 - 2⁹ = 5474387946569 is a prime.

It is a super-2 number, since 2×5474387947081² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5474387946998 and 5474387947016.

It is not an unprimeable number, because it can be changed into a prime (5474387947087) 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, 1169871 + ... + 3509611.

Almost surely, 2^{5474387947081} is an apocalyptic number.

5474387947081 is the 2339741-st square number.

5474387947081 is the 1169871-st centered octagonal number.

It is an amenable number.

5474387947081 is a deficient number, since it is larger than the sum of its proper divisors (2339742).

5474387947081 is an frugal number, since it uses more digits than its factorization.

5474387947081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4679482 (or 2339741 counting only the distinct ones).

The product of its (nonzero) digits is 189665280, while the sum is 67.

The spelling of 5474387947081 in words is "five trillion, four hundred seventy-four billion, three hundred eighty-seven million, nine hundred forty-seven thousand, eighty-one".