547911971 has 4 divisors (see below), whose sum is σ = 553336944. Its totient is φ = 542487000.

The previous prime is 547911919. The next prime is 547911979. The reversal of 547911971 is 179119745.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-547911971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (547911979) 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, 2712335 + ... + 2712536.

It is an arithmetic number, because the mean of its divisors is an integer number (138334236).

Almost surely, 2^547911971 is an apocalyptic number.

547911971 is a deficient number, since it is larger than the sum of its proper divisors (5424973).

547911971 is a wasteful number, since it uses less digits than its factorization.

547911971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5424972.

The product of its digits is 79380, while the sum is 44.

The square root of 547911971 is about 23407.5195396693. The cubic root of 547911971 is about 818.2831275228.

The spelling of 547911971 in words is "five hundred forty-seven million, nine hundred eleven thousand, nine hundred seventy-one".