551622 has 16 divisors (see below), whose sum is σ = 1116720. Its totient is φ = 181632.

The previous prime is 551597. The next prime is 551651. The reversal of 551622 is 226155.

It is a congruent number.

It is an unprimeable number.

551622 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, 18 + ... + 1050.

It is an arithmetic number, because the mean of its divisors is an integer number (69795).

2⁵⁵¹⁶²² is an apocalyptic number.

551622 is an abundant number, since it is smaller than the sum of its proper divisors (565098).

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

551622 is a wasteful number, since it uses less digits than its factorization.

551622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1127.

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

The square root of 551622 is about 742.7125958269. The cubic root of 551622 is about 82.0125897782.

Adding to 551622 its reverse (226155), we get a palindrome (777777).

The spelling of 551622 in words is "five hundred fifty-one thousand, six hundred twenty-two".