505011873 has 4 divisors (see below), whose sum is σ = 673349168. Its totient is φ = 336674580.

The previous prime is 505011869. The next prime is 505011893. The reversal of 505011873 is 378110505.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 505011873 - 2² = 505011869 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 505011873.

It is not an unprimeable number, because it can be changed into a prime (505011893) 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, 84168643 + ... + 84168648.

It is an arithmetic number, because the mean of its divisors is an integer number (168337292).

Almost surely, 2^505011873 is an apocalyptic number.

It is an amenable number.

505011873 is a deficient number, since it is larger than the sum of its proper divisors (168337295).

505011873 is a wasteful number, since it uses less digits than its factorization.

505011873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168337294.

The product of its (nonzero) digits is 4200, while the sum is 30.

The square root of 505011873 is about 22472.4692234743. The cubic root of 505011873 is about 796.3436649975.

The spelling of 505011873 in words is "five hundred five million, eleven thousand, eight hundred seventy-three".