801541 has 4 divisors (see below), whose sum is σ = 863212. Its totient is φ = 739872.

The previous prime is 801539. The next prime is 801551. The reversal of 801541 is 145108.

It is the 366-th star number.

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 245025 + 556516 = 495^2 + 746^2 .

It is a cyclic number.

It is not a de Polignac number, because 801541 - 2¹ = 801539 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (801551) 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, 30816 + ... + 30841.

It is an arithmetic number, because the mean of its divisors is an integer number (215803).

2⁸⁰¹⁵⁴¹ is an apocalyptic number.

It is an amenable number.

801541 is a deficient number, since it is larger than the sum of its proper divisors (61671).

801541 is a wasteful number, since it uses less digits than its factorization.

801541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61670.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 801541 is about 895.2882217476. The cubic root of 801541 is about 92.8913441779.

Adding to 801541 its reverse (145108), we get a palindrome (946649).

The spelling of 801541 in words is "eight hundred one thousand, five hundred forty-one".