548565217 has 2 divisors, whose sum is σ = 548565218. Its totient is φ = 548565216.

The previous prime is 548565187. The next prime is 548565223. The reversal of 548565217 is 712565845.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 534719376 + 13845841 = 23124^2 + 3721^2 .

It is a cyclic number.

It is not a de Polignac number, because 548565217 - 2⁷ = 548565089 is a prime.

It is not a weakly prime, because it can be changed into another prime (548565257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274282608 + 274282609.

It is an arithmetic number, because the mean of its divisors is an integer number (274282609).

Almost surely, 2^548565217 is an apocalyptic number.

It is an amenable number.

548565217 is a deficient number, since it is larger than the sum of its proper divisors (1).

548565217 is an equidigital number, since it uses as much as digits as its factorization.

548565217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 336000, while the sum is 43.

The square root of 548565217 is about 23421.4691469173. The cubic root of 548565217 is about 818.6081967032.

The spelling of 548565217 in words is "five hundred forty-eight million, five hundred sixty-five thousand, two hundred seventeen".