105545129 has 4 divisors (see below), whose sum is σ = 111753684. Its totient is φ = 99336576.

The previous prime is 105545119. The next prime is 105545131. The reversal of 105545129 is 921545501.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 68029504 + 37515625 = 8248^2 + 6125^2 .

It is not a de Polignac number, because 105545129 - 2⁴ = 105545113 is a prime.

It is a super-2 number, since 2×105545129² = 22279548511253282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 105545095 and 105545104.

It is not an unprimeable number, because it can be changed into a prime (105545119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3104252 + ... + 3104285.

It is an arithmetic number, because the mean of its divisors is an integer number (27938421).

Almost surely, 2^105545129 is an apocalyptic number.

It is an amenable number.

105545129 is a deficient number, since it is larger than the sum of its proper divisors (6208555).

105545129 is an equidigital number, since it uses as much as digits as its factorization.

105545129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6208554.

The product of its (nonzero) digits is 9000, while the sum is 32.

The square root of 105545129 is about 10273.5159025525. The cubic root of 105545129 is about 472.5844183498.

The spelling of 105545129 in words is "one hundred five million, five hundred forty-five thousand, one hundred twenty-nine".