541581 has 16 divisors (see below), whose sum is σ = 774144. Its totient is φ = 335984.

The previous prime is 541579. The next prime is 541589. The reversal of 541581 is 185145.

It is not a de Polignac number, because 541581 - 2¹ = 541579 is a prime.

It is a super-3 number, since 3×541581³ = 476553336121877823, which contains 333 as substring. Note that it is a super-d number also for d = 2.

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 541581.

It is not an unprimeable number, because it can be changed into a prime (541589) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3160 + ... + 3326.

It is an arithmetic number, because the mean of its divisors is an integer number (48384).

2⁵⁴¹⁵⁸¹ is an apocalyptic number.

It is an amenable number.

541581 is a deficient number, since it is larger than the sum of its proper divisors (232563).

541581 is a wasteful number, since it uses less digits than its factorization.

541581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240.

The product of its digits is 800, while the sum is 24.

The square root of 541581 is about 735.9218708531. The cubic root of 541581 is about 81.5119231806.

The spelling of 541581 in words is "five hundred forty-one thousand, five hundred eighty-one".