551243 has 8 divisors (see below), whose sum is σ = 687360. Its totient is φ = 429480.

The previous prime is 551233. The next prime is 551269. The reversal of 551243 is 342155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 551243 - 2⁶ = 551179 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 551243.

It is not an unprimeable number, because it can be changed into a prime (551233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3503 + ... + 3656.

It is an arithmetic number, because the mean of its divisors is an integer number (85920).

2⁵⁵¹²⁴³ is an apocalyptic number.

551243 is a deficient number, since it is larger than the sum of its proper divisors (136117).

551243 is a wasteful number, since it uses less digits than its factorization.

551243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7177.

The product of its digits is 600, while the sum is 20.

The square root of 551243 is about 742.4574061857. The cubic root of 551243 is about 81.9938028233.

Adding to 551243 its reverse (342155), we get a palindrome (893398).

It can be divided in two parts, 5512 and 43, that multiplied together give a triangular number (237016 = T₆₈₈).

The spelling of 551243 in words is "five hundred fifty-one thousand, two hundred forty-three".