105047945 has 8 divisors (see below), whose sum is σ = 129132360. Its totient is φ = 81988480.

The previous prime is 105047939. The next prime is 105047963. The reversal of 105047945 is 549740501.

It can be written as a sum of positive squares in 4 ways, for example, as 2572816 + 102475129 = 1604^2 + 10123^2 .

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

It is not a de Polignac number, because 105047945 - 2⁶ = 105047881 is a prime.

It is a super-2 number, since 2×105047945² = 22070141497446050, which contains 22 as substring.

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, 256010 + ... + 256419.

It is an arithmetic number, because the mean of its divisors is an integer number (16141545).

Almost surely, 2^105047945 is an apocalyptic number.

It is an amenable number.

105047945 is a deficient number, since it is larger than the sum of its proper divisors (24084415).

105047945 is an equidigital number, since it uses as much as digits as its factorization.

105047945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512475.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 105047945 is about 10249.2899754081. The cubic root of 105047945 is about 471.8411934028.

The spelling of 105047945 in words is "one hundred five million, forty-seven thousand, nine hundred forty-five".