551226 has 32 divisors (see below), whose sum is σ = 1225728. Its totient is φ = 164160.

The previous prime is 551219. The next prime is 551231. The reversal of 551226 is 622155.

It is an unprimeable number.

551226 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 15 ways as a sum of consecutive naturals, for example, 2791 + ... + 2981.

It is an arithmetic number, because the mean of its divisors is an integer number (38304).

2⁵⁵¹²²⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (612864).

551226 is an abundant number, since it is smaller than the sum of its proper divisors (674502).

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

551226 is a wasteful number, since it uses less digits than its factorization.

551226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246.

The product of its digits is 600, while the sum is 21.

The square root of 551226 is about 742.4459576292. The cubic root of 551226 is about 81.9929599350.

It can be divided in two parts, 551 and 226, that added together give a palindrome (777).

The spelling of 551226 in words is "five hundred fifty-one thousand, two hundred twenty-six".