505000505 has 12 divisors (see below), whose sum is σ = 612121836. Its totient is φ = 399960000.

The previous prime is 505000501. The next prime is 505000511.

It is a happy number.

505000505 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 6 ways, for example, as 263477824 + 241522681 = 16232^2 + 15541^2 .

It is not a de Polignac number, because 505000505 - 2² = 505000501 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505000501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46055 + ... + 55955.

It is an arithmetic number, because the mean of its divisors is an integer number (51010153).

Almost surely, 2^505000505 is an apocalyptic number.

It is an amenable number.

505000505 is a deficient number, since it is larger than the sum of its proper divisors (107121331).

505000505 is an equidigital number, since it uses as much as digits as its factorization.

505000505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10108 (or 10007 counting only the distinct ones).

The product of its (nonzero) digits is 625, while the sum is 20.

The square root of 505000505 is about 22472.2162903439. The cubic root of 505000505 is about 796.3376896246.

It can be divided in two parts, 505000 and 505, that added together give a palindrome (505505).

The spelling of 505000505 in words is "five hundred five million, five hundred five", and thus it is an aban number.