549997056 has 360 divisors, whose sum is σ = 1959740640. Its totient is φ = 145391616.

The previous prime is 549997043. The next prime is 549997057. The reversal of 549997056 is 650799945.

549997056 is a `hidden beast` number, since 549 + 9 + 97 + 0 + 5 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 549996993 and 549997011.

It is not an unprimeable number, because it can be changed into a prime (549997057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9321955 + ... + 9322013.

It is an arithmetic number, because the mean of its divisors is an integer number (5443724).

Almost surely, 2^549997056 is an apocalyptic number.

549997056 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 549997056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (979870320).

549997056 is an abundant number, since it is smaller than the sum of its proper divisors (1409743584).

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

549997056 is a wasteful number, since it uses less digits than its factorization.

549997056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124 (or 88 counting only the distinct ones).

The product of its (nonzero) digits is 3061800, while the sum is 54.

The square root of 549997056 is about 23452.0160327423. The cubic root of 549997056 is about 819.3198087303.

The spelling of 549997056 in words is "five hundred forty-nine million, nine hundred ninety-seven thousand, fifty-six".