547447272091 has 4 divisors (see below), whose sum is σ = 547619374384. Its totient is φ = 547275169800.

The previous prime is 547447272041. The next prime is 547447272133. The reversal of 547447272091 is 190272744745.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 190272744745 = 5 ⋅38054548949.

It is a cyclic number.

It is not a de Polignac number, because 547447272091 - 2⁷ = 547447271963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (547447272011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86046375 + ... + 86052736.

It is an arithmetic number, because the mean of its divisors is an integer number (136904843596).

Almost surely, 2^547447272091 is an apocalyptic number.

547447272091 is a deficient number, since it is larger than the sum of its proper divisors (172102293).

547447272091 is a wasteful number, since it uses less digits than its factorization.

547447272091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172102292.

The product of its (nonzero) digits is 3951360, while the sum is 52.

The spelling of 547447272091 in words is "five hundred forty-seven billion, four hundred forty-seven million, two hundred seventy-two thousand, ninety-one".