505500010101 has 6 divisors (see below), whose sum is σ = 730166681270. Its totient is φ = 337000006728.

The previous prime is 505500010069. The next prime is 505500010151. The reversal of 505500010101 is 101010005505.

505500010101 is a `hidden beast` number, since 5 + 0 + 550 + 0 + 0 + 10 + 101 = 666.

It can be written as a sum of positive squares in only one way, i.e., 493267428900 + 12232581201 = 702330^2 + 110601^2 .

It is not a de Polignac number, because 505500010101 - 2⁵ = 505500010069 is a prime.

It is a super-2 number, since 2×505500010101² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505500010151) 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 5 ways as a sum of consecutive naturals, for example, 28083333886 + ... + 28083333903.

Almost surely, 2^505500010101 is an apocalyptic number.

It is an amenable number.

505500010101 is a deficient number, since it is larger than the sum of its proper divisors (224666671169).

505500010101 is a wasteful number, since it uses less digits than its factorization.

505500010101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56166667795 (or 56166667792 counting only the distinct ones).

The product of its (nonzero) digits is 125, while the sum is 18.

Adding to 505500010101 its reverse (101010005505), we get a palindrome (606510015606).

The spelling of 505500010101 in words is "five hundred five billion, five hundred million, ten thousand, one hundred one".