549571968 has 192 divisors, whose sum is σ = 1782144000. Its totient is φ = 161049600.

The previous prime is 549571963. The next prime is 549571993. The reversal of 549571968 is 869175945.

549571968 is a `hidden beast` number, since 5 + 4 + 9 + 571 + 9 + 68 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a super-2 number, since 2×549571968² = 604058696022786048, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (549571963) 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, 392133 + ... + 393531.

It is an arithmetic number, because the mean of its divisors is an integer number (9282000).

Almost surely, 2^549571968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 549571968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (891072000).

549571968 is an abundant number, since it is smaller than the sum of its proper divisors (1232572032).

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

549571968 is a wasteful number, since it uses less digits than its factorization.

549571968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1461 (or 1446 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 54.

The square root of 549571968 is about 23442.9513500327. The cubic root of 549571968 is about 819.1086725785.

The spelling of 549571968 in words is "five hundred forty-nine million, five hundred seventy-one thousand, nine hundred sixty-eight".