505105100 has 36 divisors (see below), whose sum is σ = 1097054784. Its totient is φ = 201862080.

The previous prime is 505105061. The next prime is 505105109. The reversal of 505105100 is 1501505.

It is not an unprimeable number, because it can be changed into a prime (505105109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 213122 + ... + 215478.

It is an arithmetic number, because the mean of its divisors is an integer number (30473744).

Almost surely, 2^505105100 is an apocalyptic number.

505105100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

505105100 is an abundant number, since it is smaller than the sum of its proper divisors (591949684).

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

505105100 is a wasteful number, since it uses less digits than its factorization.

505105100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4514 (or 4507 counting only the distinct ones).

The product of its (nonzero) digits is 125, while the sum is 17.

The square root of 505105100 is about 22474.5433768964. The cubic root of 505105100 is about 796.3926646131.

Adding to 505105100 its reverse (1501505), we get a palindrome (506606605).

The spelling of 505105100 in words is "five hundred five million, one hundred five thousand, one hundred".