551886 has 16 divisors (see below), whose sum is σ = 1123200. Its totient is φ = 180728.

The previous prime is 551861. The next prime is 551909. The reversal of 551886 is 688155.

It is a plaindrome in base 7.

It is a zygodrome in base 7.

It is a congruent number.

It is an unprimeable number.

551886 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 426 + ... + 1133.

It is an arithmetic number, because the mean of its divisors is an integer number (70200).

2⁵⁵¹⁸⁸⁶ is an apocalyptic number.

551886 is an abundant number, since it is smaller than the sum of its proper divisors (571314).

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

551886 is a wasteful number, since it uses less digits than its factorization.

551886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1623.

The product of its digits is 9600, while the sum is 33.

The square root of 551886 is about 742.8903014578. The cubic root of 551886 is about 82.0256711217.

The spelling of 551886 in words is "five hundred fifty-one thousand, eight hundred eighty-six".