505308005 has 4 divisors (see below), whose sum is σ = 606369612. Its totient is φ = 404246400.

The previous prime is 505307963. The next prime is 505308019. The reversal of 505308005 is 500803505.

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

It can be written as a sum of positive squares in 2 ways, for example, as 359405764 + 145902241 = 18958^2 + 12079^2 .

It is not a de Polignac number, because 505308005 - 2¹⁸ = 505045861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50530796 + ... + 50530805.

It is an arithmetic number, because the mean of its divisors is an integer number (151592403).

Almost surely, 2^505308005 is an apocalyptic number.

It is an amenable number.

505308005 is a deficient number, since it is larger than the sum of its proper divisors (101061607).

505308005 is a wasteful number, since it uses less digits than its factorization.

505308005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101061606.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 505308005 is about 22479.0570309344. The cubic root of 505308005 is about 796.4992895649.

The spelling of 505308005 in words is "five hundred five million, three hundred eight thousand, five".