505609105 has 16 divisors (see below), whose sum is σ = 621661824. Its totient is φ = 394652160.

The previous prime is 505609103. The next prime is 505609109. The reversal of 505609105 is 501906505.

It is a happy number.

It is not a de Polignac number, because 505609105 - 2¹ = 505609103 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505609103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27094 + ... + 41776.

It is an arithmetic number, because the mean of its divisors is an integer number (38853864).

Almost surely, 2^505609105 is an apocalyptic number.

It is an amenable number.

505609105 is a deficient number, since it is larger than the sum of its proper divisors (116052719).

505609105 is a wasteful number, since it uses less digits than its factorization.

505609105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14856.

The product of its (nonzero) digits is 6750, while the sum is 31.

The square root of 505609105 is about 22485.7533785284. The cubic root of 505609105 is about 796.6574626093.

The spelling of 505609105 in words is "five hundred five million, six hundred nine thousand, one hundred five".