10001641 has 4 divisors (see below), whose sum is σ = 10771012. Its totient is φ = 9232272.

The previous prime is 10001617. The next prime is 10001659. The reversal of 10001641 is 14610001.

10001641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 3345241 + 6656400 = 1829^2 + 2580^2 .

It is a cyclic number.

It is not a de Polignac number, because 10001641 - 2¹¹ = 9999593 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 769357 = 10001641 / (1 + 0 + 0 + 0 + 1 + 6 + 4 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10001441) 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, 384666 + ... + 384691.

It is an arithmetic number, because the mean of its divisors is an integer number (2692753).

Almost surely, 2^10001641 is an apocalyptic number.

It is an amenable number.

10001641 is a deficient number, since it is larger than the sum of its proper divisors (769371).

10001641 is an equidigital number, since it uses as much as digits as its factorization.

10001641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769370.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 10001641 is about 3162.5371144067. The cubic root of 10001641 is about 215.4552531164.

Subtracting from 10001641 its sum of digits (13), we obtain a triangular number (10001628 = T₄₄₇₂).

Adding to 10001641 its reverse (14610001), we get a palindrome (24611642).

The spelling of 10001641 in words is "ten million, one thousand, six hundred forty-one".