105505555 has 8 divisors (see below), whose sum is σ = 130690944. Its totient is φ = 81681600.

The previous prime is 105505549. The next prime is 105505627. The reversal of 105505555 is 555505501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 105505555 - 2⁷ = 105505427 is a prime.

It is a super-2 number, since 2×105505555² = 22262844271716050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 340186 + ... + 340495.

It is an arithmetic number, because the mean of its divisors is an integer number (16336368).

Almost surely, 2^105505555 is an apocalyptic number.

105505555 is a deficient number, since it is larger than the sum of its proper divisors (25185389).

105505555 is an equidigital number, since it uses as much as digits as its factorization.

105505555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680717.

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

The square root of 105505555 is about 10271.5897016966. The cubic root of 105505555 is about 472.5253460084.

The spelling of 105505555 in words is "one hundred five million, five hundred five thousand, five hundred fifty-five".