553866 has 8 divisors (see below), whose sum is σ = 1107744. Its totient is φ = 184620.

The previous prime is 553849. The next prime is 553867. The reversal of 553866 is 668355.

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

553866 is an admirable number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 553866.

It is not an unprimeable number, because it can be changed into a prime (553867) by changing a digit.

553866 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, 46150 + ... + 46161.

It is an arithmetic number, because the mean of its divisors is an integer number (138468).

2⁵⁵³⁸⁶⁶ is an apocalyptic number.

553866 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

553866 is a wasteful number, since it uses less digits than its factorization.

553866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92316.

The product of its digits is 21600, while the sum is 33.

The square root of 553866 is about 744.2217411498. The cubic root of 553866 is about 82.1236484746.

Adding to 553866 its reverse (668355), we get a palindrome (1222221).

The spelling of 553866 in words is "five hundred fifty-three thousand, eight hundred sixty-six".