549791772 has 12 divisors (see below), whose sum is σ = 1282847496. Its totient is φ = 183263920.

The previous prime is 549791761. The next prime is 549791777. The reversal of 549791772 is 277197945.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549791777) 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, 22907979 + ... + 22908002.

It is an arithmetic number, because the mean of its divisors is an integer number (106903958).

Almost surely, 2^549791772 is an apocalyptic number.

It is an amenable number.

549791772 is an abundant number, since it is smaller than the sum of its proper divisors (733055724).

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

549791772 is a wasteful number, since it uses less digits than its factorization.

549791772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45815988 (or 45815986 counting only the distinct ones).

The product of its digits is 1111320, while the sum is 51.

The square root of 549791772 is about 23447.6389429725. The cubic root of 549791772 is about 819.2178601980.

The spelling of 549791772 in words is "five hundred forty-nine million, seven hundred ninety-one thousand, seven hundred seventy-two".