505134543 has 4 divisors (see below), whose sum is σ = 673512728. Its totient is φ = 336756360.

The previous prime is 505134529. The next prime is 505134547. The reversal of 505134543 is 345431505.

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

It is not a de Polignac number, because 505134543 - 2⁴ = 505134527 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 505134543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505134547) 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, 84189088 + ... + 84189093.

It is an arithmetic number, because the mean of its divisors is an integer number (168378182).

Almost surely, 2^505134543 is an apocalyptic number.

505134543 is a deficient number, since it is larger than the sum of its proper divisors (168378185).

505134543 is a wasteful number, since it uses less digits than its factorization.

505134543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168378184.

The product of its (nonzero) digits is 18000, while the sum is 30.

The square root of 505134543 is about 22475.1983973446. The cubic root of 505134543 is about 796.4081384446.

The spelling of 505134543 in words is "five hundred five million, one hundred thirty-four thousand, five hundred forty-three".