549435161 has 8 divisors (see below), whose sum is σ = 601505184. Its totient is φ = 497718720.

The previous prime is 549435149. The next prime is 549435233. The reversal of 549435161 is 161534945.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 549435161 - 2¹⁴ = 549418777 is a prime.

It is a super-2 number, since 2×549435161² = 603757992286191842, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (549435361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85136 + ... + 91361.

It is an arithmetic number, because the mean of its divisors is an integer number (75188148).

Almost surely, 2^549435161 is an apocalyptic number.

It is an amenable number.

549435161 is a deficient number, since it is larger than the sum of its proper divisors (52070023).

549435161 is a wasteful number, since it uses less digits than its factorization.

549435161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176791.

The product of its digits is 64800, while the sum is 38.

The square root of 549435161 is about 23440.0332977579. The cubic root of 549435161 is about 819.0406990121.

The spelling of 549435161 in words is "five hundred forty-nine million, four hundred thirty-five thousand, one hundred sixty-one".