505641743 has 4 divisors (see below), whose sum is σ = 506182320. Its totient is φ = 505101168.

The previous prime is 505641739. The next prime is 505641751. The reversal of 505641743 is 347146505.

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 505641743 - 2² = 505641739 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 (505641793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268883 + ... + 270756.

It is an arithmetic number, because the mean of its divisors is an integer number (126545580).

Almost surely, 2^505641743 is an apocalyptic number.

505641743 is a deficient number, since it is larger than the sum of its proper divisors (540577).

505641743 is an equidigital number, since it uses as much as digits as its factorization.

505641743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540576.

The product of its (nonzero) digits is 50400, while the sum is 35.

The square root of 505641743 is about 22486.4791152372. The cubic root of 505641743 is about 796.6746041431.

The spelling of 505641743 in words is "five hundred five million, six hundred forty-one thousand, seven hundred forty-three".