505605126 has 32 divisors (see below), whose sum is σ = 1153057248. Its totient is φ = 146419200.

The previous prime is 505605119. The next prime is 505605131. The reversal of 505605126 is 621506505.

It is a junction number, because it is equal to n+sod(n) for n = 505605093 and 505605102.

It is a congruent number.

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, 189325 + ... + 191976.

It is an arithmetic number, because the mean of its divisors is an integer number (36033039).

Almost surely, 2^505605126 is an apocalyptic number.

505605126 is an abundant number, since it is smaller than the sum of its proper divisors (647452122).

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

505605126 is a wasteful number, since it uses less digits than its factorization.

505605126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381336.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 505605126 is about 22485.6649001091. The cubic root of 505605126 is about 796.6553727812.

The spelling of 505605126 in words is "five hundred five million, six hundred five thousand, one hundred twenty-six".