551968 has 24 divisors (see below), whose sum is σ = 1112832. Its totient is φ = 269376.
The previous prime is 551963. The next prime is 551981. The reversal of 551968 is 869155.
It is a plaindrome in base 11.
It is not an unprimeable number, because it can be changed into a prime (551963) by changing a digit.
551968 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1321 + ... + 1687.
It is an arithmetic number, because the mean of its divisors is an integer number (46368).
2551968 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 551968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (556416).
551968 is an abundant number, since it is smaller than the sum of its proper divisors (560864).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
551968 is a wasteful number, since it uses less digits than its factorization.
551968 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 424 (or 416 counting only the distinct ones).
The product of its digits is 10800, while the sum is 34.
The square root of 551968 is about 742.9454892521. The cubic root of 551968 is about 82.0297334172.
The spelling of 551968 in words is "five hundred fifty-one thousand, nine hundred sixty-eight".
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