1001541 has 8 divisors (see below), whose sum is σ = 1360800. Its totient is φ = 654992.

The previous prime is 1001531. The next prime is 1001549. The reversal of 1001541 is 1451001.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1001541 - 2¹⁸ = 739397 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2991 + ... + 3308.

It is an arithmetic number, because the mean of its divisors is an integer number (170100).

2^1001541 is an apocalyptic number.

It is an amenable number.

1001541 is a deficient number, since it is larger than the sum of its proper divisors (359259).

1001541 is an equidigital number, since it uses as much as digits as its factorization.

1001541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6355.

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 1001541 is about 1000.7702033934. The cubic root of 1001541 is about 100.0513403039.

Adding to 1001541 its reverse (1451001), we get a palindrome (2452542).

The spelling of 1001541 in words is "one million, one thousand, five hundred forty-one".