549017129 has 2 divisors, whose sum is σ = 549017130. Its totient is φ = 549017128.

The previous prime is 549017123. The next prime is 549017149. The reversal of 549017129 is 921710945.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 507285529 + 41731600 = 22523^2 + 6460^2 .

It is a cyclic number.

It is not a de Polignac number, because 549017129 - 2¹² = 549013033 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 549017092 and 549017101.

It is not a weakly prime, because it can be changed into another prime (549017123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274508564 + 274508565.

It is an arithmetic number, because the mean of its divisors is an integer number (274508565).

Almost surely, 2^549017129 is an apocalyptic number.

It is an amenable number.

549017129 is a deficient number, since it is larger than the sum of its proper divisors (1).

549017129 is an equidigital number, since it uses as much as digits as its factorization.

549017129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 38.

The square root of 549017129 is about 23431.1145488216. The cubic root of 549017129 is about 818.8329267908.

The spelling of 549017129 in words is "five hundred forty-nine million, seventeen thousand, one hundred twenty-nine".