549540163 has 4 divisors (see below), whose sum is σ = 551097288. Its totient is φ = 547983040.

The previous prime is 549540157. The next prime is 549540191. The reversal of 549540163 is 361045945.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 549540163 - 2¹³ = 549531971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (549540143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 778033 + ... + 778738.

It is an arithmetic number, because the mean of its divisors is an integer number (137774322).

Almost surely, 2^549540163 is an apocalyptic number.

549540163 is a deficient number, since it is larger than the sum of its proper divisors (1557125).

549540163 is a wasteful number, since it uses less digits than its factorization.

549540163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1557124.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 549540163 is about 23442.2729913291. The cubic root of 549540163 is about 819.0928710363.

The spelling of 549540163 in words is "five hundred forty-nine million, five hundred forty thousand, one hundred sixty-three".