8505541 has 4 divisors (see below), whose sum is σ = 9278784. Its totient is φ = 7732300.

The previous prime is 8505533. The next prime is 8505547. The reversal of 8505541 is 1455058.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8505541 - 2³ = 8505533 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 (8505547) 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, 386605 + ... + 386626.

It is an arithmetic number, because the mean of its divisors is an integer number (2319696).

Almost surely, 2^8505541 is an apocalyptic number.

It is an amenable number.

8505541 is a deficient number, since it is larger than the sum of its proper divisors (773243).

8505541 is a wasteful number, since it uses less digits than its factorization.

8505541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773242.

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 8505541 is about 2916.4260662667. The cubic root of 8505541 is about 204.1270914454.

The spelling of 8505541 in words is "eight million, five hundred five thousand, five hundred forty-one".