551322 has 24 divisors (see below), whose sum is σ = 1209780. Its totient is φ = 181440.

The previous prime is 551321. The next prime is 551339. The reversal of 551322 is 223155.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 531441 + 19881 = 729^2 + 141^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 551295 and 551304.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 551322.

It is not an unprimeable number, because it can be changed into a prime (551321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1822 + ... + 2102.

2⁵⁵¹³²² is an apocalyptic number.

551322 is an abundant number, since it is smaller than the sum of its proper divisors (658458).

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

551322 is a wasteful number, since it uses less digits than its factorization.

551322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398 (or 395 counting only the distinct ones).

The product of its digits is 300, while the sum is 18.

The square root of 551322 is about 742.5106059849. The cubic root of 551322 is about 81.9977195479.

Adding to 551322 its reverse (223155), we get a palindrome (774477).

The spelling of 551322 in words is "five hundred fifty-one thousand, three hundred twenty-two".