505665244 has 12 divisors (see below), whose sum is σ = 1011330544. Its totient is φ = 216713664.

The previous prime is 505665241. The next prime is 505665247. The reversal of 505665244 is 442566505.

It is an interprime number because it is at equal distance from previous prime (505665241) and next prime (505665247).

505665244 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505665241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9029709 + ... + 9029764.

Almost surely, 2^505665244 is an apocalyptic number.

It is an amenable number.

505665244 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

505665244 is a wasteful number, since it uses less digits than its factorization.

505665244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18059484 (or 18059482 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 37.

The square root of 505665244 is about 22487.0016676301. The cubic root of 505665244 is about 796.6869464521.

The spelling of 505665244 in words is "five hundred five million, six hundred sixty-five thousand, two hundred forty-four".