549517271 has 2 divisors, whose sum is σ = 549517272. Its totient is φ = 549517270.

The previous prime is 549517249. The next prime is 549517273. The reversal of 549517271 is 172715945.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-549517271 is a prime.

It is a super-2 number, since 2×549517271² = 603938462254574882, which contains 22 as substring.

Together with 549517273, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (549517273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274758635 + 274758636.

It is an arithmetic number, because the mean of its divisors is an integer number (274758636).

Almost surely, 2^549517271 is an apocalyptic number.

549517271 is a deficient number, since it is larger than the sum of its proper divisors (1).

549517271 is an equidigital number, since it uses as much as digits as its factorization.

549517271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 88200, while the sum is 41.

The square root of 549517271 is about 23441.7847230112. The cubic root of 549517271 is about 819.0814973244.

The spelling of 549517271 in words is "five hundred forty-nine million, five hundred seventeen thousand, two hundred seventy-one".