505501104 has 80 divisors (see below), whose sum is σ = 1346501120. Its totient is φ = 163296000.

The previous prime is 505501081. The next prime is 505501111. The reversal of 505501104 is 401105505.

It is a super-2 number, since 2×505501104² = 511062732290437632, which contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 672729 + ... + 673479.

It is an arithmetic number, because the mean of its divisors is an integer number (16831264).

Almost surely, 2^505501104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 505501104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (673250560).

505501104 is an abundant number, since it is smaller than the sum of its proper divisors (841000016).

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

505501104 is a wasteful number, since it uses less digits than its factorization.

505501104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1178 (or 1172 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 505501104 is about 22483.3517074301. The cubic root of 505501104 is about 796.6007350380.

Adding to 505501104 its reverse (401105505), we get a palindrome (906606609).

The spelling of 505501104 in words is "five hundred five million, five hundred one thousand, one hundred four".