10001345 has 4 divisors (see below), whose sum is σ = 12001620. Its totient is φ = 8001072.

The previous prime is 10001311. The next prime is 10001347. The reversal of 10001345 is 54310001.

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 7011904 + 2989441 = 2648^2 + 1729^2 .

It is a cyclic number.

It is not a de Polignac number, because 10001345 - 2⁶ = 10001281 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10001347) by changing a digit.

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, 1000130 + ... + 1000139.

It is an arithmetic number, because the mean of its divisors is an integer number (3000405).

Almost surely, 2^10001345 is an apocalyptic number.

It is an amenable number.

10001345 is a deficient number, since it is larger than the sum of its proper divisors (2000275).

10001345 is an equidigital number, since it uses as much as digits as its factorization.

10001345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000274.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 10001345 is about 3162.4903161907. The cubic root of 10001345 is about 215.4531276190.

Adding to 10001345 its reverse (54310001), we get a palindrome (64311346).

The spelling of 10001345 in words is "ten million, one thousand, three hundred forty-five".