549198772 has 12 divisors (see below), whose sum is σ = 984539556. Its totient is φ = 267901760.

The previous prime is 549198751. The next prime is 549198779. The reversal of 549198772 is 277891945.

It can be written as a sum of positive squares in 2 ways, for example, as 204947856 + 344250916 = 14316^2 + 18554^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549198779) 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, 1674223 + ... + 1674550.

It is an arithmetic number, because the mean of its divisors is an integer number (82044963).

Almost surely, 2^549198772 is an apocalyptic number.

It is an amenable number.

549198772 is a deficient number, since it is larger than the sum of its proper divisors (435340784).

549198772 is a wasteful number, since it uses less digits than its factorization.

549198772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3348818 (or 3348816 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 52.

The square root of 549198772 is about 23434.9903349671. The cubic root of 549198772 is about 818.9232207976.

The spelling of 549198772 in words is "five hundred forty-nine million, one hundred ninety-eight thousand, seven hundred seventy-two".