805117541 has 8 divisors (see below), whose sum is σ = 827980704. Its totient is φ = 782538640.

The previous prime is 805117529. The next prime is 805117549. The reversal of 805117541 is 145711508.

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

It is a de Polignac number, because none of the positive numbers 2^k-805117541 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 805117498 and 805117507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (805117549) 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, 65315 + ... + 76656.

It is an arithmetic number, because the mean of its divisors is an integer number (103497588).

Almost surely, 2^805117541 is an apocalyptic number.

It is an amenable number.

805117541 is a deficient number, since it is larger than the sum of its proper divisors (22863163).

805117541 is a wasteful number, since it uses less digits than its factorization.

805117541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142131.

The product of its (nonzero) digits is 5600, while the sum is 32.

The square root of 805117541 is about 28374.5932305646. The cubic root of 805117541 is about 930.2930209357.

The spelling of 805117541 in words is "eight hundred five million, one hundred seventeen thousand, five hundred forty-one".