549535518 has 48 divisors (see below), whose sum is σ = 1432379520. Its totient is φ = 148745808.

The previous prime is 549535513. The next prime is 549535561. The reversal of 549535518 is 815535945.

549535518 is a `hidden beast` number, since 5 + 4 + 95 + 3 + 551 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549535513) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 112380 + ... + 117167.

It is an arithmetic number, because the mean of its divisors is an integer number (29841240).

Almost surely, 2^549535518 is an apocalyptic number.

549535518 is an abundant number, since it is smaller than the sum of its proper divisors (882844002).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

549535518 is a wasteful number, since it uses less digits than its factorization.

549535518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229581 (or 229578 counting only the distinct ones).

The product of its digits is 540000, while the sum is 45.

The square root of 549535518 is about 23442.1739179625. The cubic root of 549535518 is about 819.0905632298.

The spelling of 549535518 in words is "five hundred forty-nine million, five hundred thirty-five thousand, five hundred eighteen".