549117205 has 32 divisors (see below), whose sum is σ = 818947584. Its totient is φ = 344169216.

The previous prime is 549117197. The next prime is 549117211. The reversal of 549117205 is 502711945.

549117205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a 4-Lehmer number, since φ(549117205) divides (549117205-1)⁴.

It is a cyclic number.

It is a Carmichael number.

It is not a de Polignac number, because 549117205 - 2³ = 549117197 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41007 + ... + 52723.

It is an arithmetic number, because the mean of its divisors is an integer number (25592112).

It is a Poulet number, since it divides 2^549117204-1.

Almost surely, 2^549117205 is an apocalyptic number.

549117205 is the 11717-th decagonal number.

It is an amenable number.

549117205 is a deficient number, since it is larger than the sum of its proper divisors (269830379).

549117205 is a wasteful number, since it uses less digits than its factorization.

549117205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11845.

The product of its (nonzero) digits is 12600, while the sum is 34.

The square root of 549117205 is about 23433.2499879978. The cubic root of 549117205 is about 818.8826766322.

The spelling of 549117205 in words is "five hundred forty-nine million, one hundred seventeen thousand, two hundred five".