541985 has 8 divisors (see below), whose sum is σ = 661416. Its totient is φ = 426240.

The previous prime is 541967. The next prime is 541987. The reversal of 541985 is 589145.

It can be written as a sum of positive squares in 4 ways, for example, as 289 + 541696 = 17^2 + 736^2 .

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

It is not a de Polignac number, because 541985 - 2¹⁰ = 540961 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 541985.

It is not an unprimeable number, because it can be changed into a prime (541987) 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, 584 + ... + 1193.

It is an arithmetic number, because the mean of its divisors is an integer number (82677).

2⁵⁴¹⁹⁸⁵ is an apocalyptic number.

It is an amenable number.

541985 is a deficient number, since it is larger than the sum of its proper divisors (119431).

541985 is a wasteful number, since it uses less digits than its factorization.

541985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1843.

The product of its digits is 7200, while the sum is 32.

The square root of 541985 is about 736.1963053425. The cubic root of 541985 is about 81.5321864666.

The spelling of 541985 in words is "five hundred forty-one thousand, nine hundred eighty-five".