551966 has 8 divisors (see below), whose sum is σ = 850440. Its totient is φ = 268488.

The previous prime is 551963. The next prime is 551981. The reversal of 551966 is 669155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551963) 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, 3656 + ... + 3803.

It is an arithmetic number, because the mean of its divisors is an integer number (106305).

2⁵⁵¹⁹⁶⁶ is an apocalyptic number.

551966 is a deficient number, since it is larger than the sum of its proper divisors (298474).

551966 is a wasteful number, since it uses less digits than its factorization.

551966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7498.

The product of its digits is 8100, while the sum is 32.

The square root of 551966 is about 742.9441432571. The cubic root of 551966 is about 82.0296343416.

The spelling of 551966 in words is "five hundred fifty-one thousand, nine hundred sixty-six".