551106 has 24 divisors (see below), whose sum is σ = 1265004. Its totient is φ = 172800.

The previous prime is 551099. The next prime is 551107. The reversal of 551106 is 601155.

It can be written as a sum of positive squares in 2 ways, for example, as 549081 + 2025 = 741^2 + 45^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (551107) by changing a digit.

551106 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 (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 595 + ... + 1206.

2⁵⁵¹¹⁰⁶ is an apocalyptic number.

551106 is an abundant number, since it is smaller than the sum of its proper divisors (713898).

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

551106 is a wasteful number, since it uses less digits than its factorization.

551106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1826 (or 1823 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 551106 is about 742.3651392677. The cubic root of 551106 is about 81.9870096416.

The spelling of 551106 in words is "five hundred fifty-one thousand, one hundred six".