505257916 has 12 divisors (see below), whose sum is σ = 884419200. Its totient is φ = 252566720.

The previous prime is 505257913. The next prime is 505257919. The reversal of 505257916 is 619752505.

It is an interprime number because it is at equal distance from previous prime (505257913) and next prime (505257919).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505257913) 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 3 ways as a sum of consecutive naturals, for example, 6036 + ... + 32356.

It is an arithmetic number, because the mean of its divisors is an integer number (73701600).

Almost surely, 2^505257916 is an apocalyptic number.

It is an amenable number.

505257916 is a deficient number, since it is larger than the sum of its proper divisors (379161284).

505257916 is a wasteful number, since it uses less digits than its factorization.

505257916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31124 (or 31122 counting only the distinct ones).

The product of its (nonzero) digits is 94500, while the sum is 40.

The square root of 505257916 is about 22477.9428774076. The cubic root of 505257916 is about 796.4729708505.

The spelling of 505257916 in words is "five hundred five million, two hundred fifty-seven thousand, nine hundred sixteen".