551118 has 16 divisors (see below), whose sum is σ = 1138176. Its totient is φ = 177720.

The previous prime is 551113. The next prime is 551129. The reversal of 551118 is 811155.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 551094 and 551103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551113) by changing a digit.

551118 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 7 ways as a sum of consecutive naturals, for example, 1296 + ... + 1667.

It is an arithmetic number, because the mean of its divisors is an integer number (71136).

2⁵⁵¹¹¹⁸ is an apocalyptic number.

551118 is an abundant number, since it is smaller than the sum of its proper divisors (587058).

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

551118 is a wasteful number, since it uses less digits than its factorization.

551118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2999.

The product of its digits is 200, while the sum is 21.

The square root of 551118 is about 742.3732214998. The cubic root of 551118 is about 81.9876047098.

The spelling of 551118 in words is "five hundred fifty-one thousand, one hundred eighteen".