505010109 has 32 divisors (see below), whose sum is σ = 723634560. Its totient is φ = 312166400.

The previous prime is 505010071. The next prime is 505010111. The reversal of 505010109 is 901010505.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 505010109 - 2⁸ = 505009853 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505010309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1797049 + ... + 1797329.

It is an arithmetic number, because the mean of its divisors is an integer number (22613580).

Almost surely, 2^505010109 is an apocalyptic number.

It is an amenable number.

505010109 is a deficient number, since it is larger than the sum of its proper divisors (218624451).

505010109 is a wasteful number, since it uses less digits than its factorization.

505010109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701.

The product of its (nonzero) digits is 225, while the sum is 21.

The square root of 505010109 is about 22472.4299754165. The cubic root of 505010109 is about 796.3427377903.

The spelling of 505010109 in words is "five hundred five million, ten thousand, one hundred nine".