549504144 has 60 divisors (see below), whose sum is σ = 1757544256. Its totient is φ = 157000896.

The previous prime is 549504139. The next prime is 549504161. The reversal of 549504144 is 441405945.

549504144 is a `hidden beast` number, since 5 + 4 + 9 + 504 + 144 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 549504099 and 549504108.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 271564 + ... + 273579.

Almost surely, 2^549504144 is an apocalyptic number.

It is an amenable number.

549504144 is an abundant number, since it is smaller than the sum of its proper divisors (1208040112).

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

549504144 is a wasteful number, since it uses less digits than its factorization.

549504144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545164 (or 545155 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 549504144 is about 23441.5047298590. The cubic root of 549504144 is about 819.0749751343.

The spelling of 549504144 in words is "five hundred forty-nine million, five hundred four thousand, one hundred forty-four".