505501343 has 4 divisors (see below), whose sum is σ = 510139080. Its totient is φ = 500863608.

The previous prime is 505501301. The next prime is 505501357. The reversal of 505501343 is 343105505.

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 505501343 - 2¹⁰ = 505500319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505501943) 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, 2318705 + ... + 2318922.

It is an arithmetic number, because the mean of its divisors is an integer number (127534770).

Almost surely, 2^505501343 is an apocalyptic number.

505501343 is a deficient number, since it is larger than the sum of its proper divisors (4637737).

505501343 is a wasteful number, since it uses less digits than its factorization.

505501343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4637736.

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 505501343 is about 22483.3570224733. The cubic root of 505501343 is about 796.6008605818.

Adding to 505501343 its reverse (343105505), we get a palindrome (848606848).

The spelling of 505501343 in words is "five hundred five million, five hundred one thousand, three hundred forty-three".