549920017 has 2 divisors, whose sum is σ = 549920018. Its totient is φ = 549920016.

The previous prime is 549919999. The next prime is 549920051. The reversal of 549920017 is 710029945.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 453860416 + 96059601 = 21304^2 + 9801^2 .

It is a cyclic number.

It is not a de Polignac number, because 549920017 - 2⁷ = 549919889 is a prime.

It is not a weakly prime, because it can be changed into another prime (549920717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274960008 + 274960009.

It is an arithmetic number, because the mean of its divisors is an integer number (274960009).

Almost surely, 2^549920017 is an apocalyptic number.

It is an amenable number.

549920017 is a deficient number, since it is larger than the sum of its proper divisors (1).

549920017 is an equidigital number, since it uses as much as digits as its factorization.

549920017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 549920017 is about 23450.3734938273. The cubic root of 549920017 is about 819.2815524491.

The spelling of 549920017 in words is "five hundred forty-nine million, nine hundred twenty thousand, seventeen".