553243 has 4 divisors (see below), whose sum is σ = 562680. Its totient is φ = 543808.

The previous prime is 553229. The next prime is 553249. The reversal of 553243 is 342355.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 553243 - 2⁵ = 553211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (553249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4630 + ... + 4747.

It is an arithmetic number, because the mean of its divisors is an integer number (140670).

2⁵⁵³²⁴³ is an apocalyptic number.

553243 is a deficient number, since it is larger than the sum of its proper divisors (9437).

553243 is an equidigital number, since it uses as much as digits as its factorization.

553243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9436.

The product of its digits is 1800, while the sum is 22.

The square root of 553243 is about 743.8030653338. The cubic root of 553243 is about 82.0928454596.

Adding to 553243 its reverse (342355), we get a palindrome (895598).

The spelling of 553243 in words is "five hundred fifty-three thousand, two hundred forty-three".