505555105 has 16 divisors (see below), whose sum is σ = 664749504. Its totient is φ = 366047680.

The previous prime is 505555091. The next prime is 505555117. The reversal of 505555105 is 501555505.

It is not a de Polignac number, because 505555105 - 2¹⁹ = 505030817 is a prime.

It is a super-2 number, since 2×505555105² = 511171928383122050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7762 + ... + 32731.

It is an arithmetic number, because the mean of its divisors is an integer number (41546844).

Almost surely, 2^505555105 is an apocalyptic number.

505555105 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

505555105 is a deficient number, since it is larger than the sum of its proper divisors (159194399).

505555105 is a wasteful number, since it uses less digits than its factorization.

505555105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40736.

The product of its (nonzero) digits is 15625, while the sum is 31.

The square root of 505555105 is about 22484.5525861646. The cubic root of 505555105 is about 796.6291000962.

The spelling of 505555105 in words is "five hundred five million, five hundred fifty-five thousand, one hundred five".