105001145 has 4 divisors (see below), whose sum is σ = 126001380. Its totient is φ = 84000912.

The previous prime is 105001097. The next prime is 105001151. The reversal of 105001145 is 541100501.

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 24522304 + 80478841 = 4952^2 + 8971^2 .

It is a cyclic number.

It is not a de Polignac number, because 105001145 - 2¹⁰ = 105000121 is a prime.

It is a super-2 number, since 2×105001145² = 22050480902622050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10500110 + ... + 10500119.

It is an arithmetic number, because the mean of its divisors is an integer number (31500345).

Almost surely, 2^105001145 is an apocalyptic number.

It is an amenable number.

105001145 is a deficient number, since it is larger than the sum of its proper divisors (21000235).

105001145 is an equidigital number, since it uses as much as digits as its factorization.

105001145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21000234.

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 105001145 is about 10247.0066360865. The cubic root of 105001145 is about 471.7711128697.

Adding to 105001145 its reverse (541100501), we get a palindrome (646101646).

The spelling of 105001145 in words is "one hundred five million, one thousand, one hundred forty-five".