105556045 has 12 divisors (see below), whose sum is σ = 147347964. Its totient is φ = 72381120.

The previous prime is 105556037. The next prime is 105556049. The reversal of 105556045 is 540655501.

It can be written as a sum of positive squares in 2 ways, for example, as 41203561 + 64352484 = 6419^2 + 8022^2 .

It is not a de Polignac number, because 105556045 - 2³ = 105556037 is a prime.

It is a super-2 number, since 2×105556045² = 22284157272084050, 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 = 105555998 and 105556016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105556049) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 215176 + ... + 215665.

It is an arithmetic number, because the mean of its divisors is an integer number (12278997).

Almost surely, 2^105556045 is an apocalyptic number.

It is an amenable number.

105556045 is a deficient number, since it is larger than the sum of its proper divisors (41791919).

105556045 is an equidigital number, since it uses as much as digits as its factorization.

105556045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430860 (or 430853 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 31.

The square root of 105556045 is about 10274.0471577660. The cubic root of 105556045 is about 472.6007101286.

The spelling of 105556045 in words is "one hundred five million, five hundred fifty-six thousand, forty-five".