541805 has 8 divisors (see below), whose sum is σ = 709344. Its totient is φ = 394000.

The previous prime is 541799. The next prime is 541817. The reversal of 541805 is 508145.

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

It is not a de Polignac number, because 541805 - 2⁸ = 541549 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4871 + ... + 4980.

It is an arithmetic number, because the mean of its divisors is an integer number (88668).

2⁵⁴¹⁸⁰⁵ is an apocalyptic number.

541805 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

541805 is a deficient number, since it is larger than the sum of its proper divisors (167539).

541805 is a wasteful number, since it uses less digits than its factorization.

541805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9867.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 541805 is about 736.0740451884. The cubic root of 541805 is about 81.5231595141.

The spelling of 541805 in words is "five hundred forty-one thousand, eight hundred five".