505217382 has 16 divisors (see below), whose sum is σ = 1031933952. Its totient is φ = 164822600.

The previous prime is 505217371. The next prime is 505217393. The reversal of 505217382 is 283712505.

It is an interprime number because it is at equal distance from previous prime (505217371) and next prime (505217393).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 895494 + ... + 896057.

It is an arithmetic number, because the mean of its divisors is an integer number (64495872).

Almost surely, 2^505217382 is an apocalyptic number.

505217382 is an abundant number, since it is smaller than the sum of its proper divisors (526716570).

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

505217382 is a wasteful number, since it uses less digits than its factorization.

505217382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1791603.

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 505217382 is about 22477.0412198759. The cubic root of 505217382 is about 796.4516714324.

Adding to 505217382 its reverse (283712505), we get a palindrome (788929887).

The spelling of 505217382 in words is "five hundred five million, two hundred seventeen thousand, three hundred eighty-two".