105516505 has 4 divisors (see below), whose sum is σ = 126619812. Its totient is φ = 84413200.

The previous prime is 105516497. The next prime is 105516527. The reversal of 105516505 is 505615501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 505615501 = 8431 ⋅59971.

It can be written as a sum of positive squares in 2 ways, for example, as 35141184 + 70375321 = 5928^2 + 8389^2 .

It is not a de Polignac number, because 105516505 - 2³ = 105516497 is a prime.

It is a super-2 number, since 2×105516505² = 22267465654830050, 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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10551646 + ... + 10551655.

It is an arithmetic number, because the mean of its divisors is an integer number (31654953).

Almost surely, 2^105516505 is an apocalyptic number.

It is an amenable number.

105516505 is a deficient number, since it is larger than the sum of its proper divisors (21103307).

105516505 is an equidigital number, since it uses as much as digits as its factorization.

105516505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21103306.

The product of its (nonzero) digits is 3750, while the sum is 28.

The square root of 105516505 is about 10272.1227114944. The cubic root of 105516505 is about 472.5416926154.

The spelling of 105516505 in words is "one hundred five million, five hundred sixteen thousand, five hundred five".