505216104 has 32 divisors (see below), whose sum is σ = 1293848640. Its totient is φ = 164297600.

The previous prime is 505216037. The next prime is 505216111. The reversal of 505216104 is 401612505.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255732 + ... + 257699.

It is an arithmetic number, because the mean of its divisors is an integer number (40432770).

Almost surely, 2^505216104 is an apocalyptic number.

It is an amenable number.

505216104 is an abundant number, since it is smaller than the sum of its proper divisors (788632536).

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

505216104 is a wasteful number, since it uses less digits than its factorization.

505216104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513481 (or 513477 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 505216104 is about 22477.0127908492. The cubic root of 505216104 is about 796.4509998627.

Adding to 505216104 its reverse (401612505), we get a palindrome (906828609).

The spelling of 505216104 in words is "five hundred five million, two hundred sixteen thousand, one hundred four".