541561 has 8 divisors (see below), whose sum is σ = 563040. Its totient is φ = 520608.

The previous prime is 541549. The next prime is 541571. The reversal of 541561 is 165145.

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

It is a cyclic number.

It is not a de Polignac number, because 541561 - 2⁵ = 541529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (541511) 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, 3885 + ... + 4021.

It is an arithmetic number, because the mean of its divisors is an integer number (70380).

2⁵⁴¹⁵⁶¹ is an apocalyptic number.

It is an amenable number.

541561 is a deficient number, since it is larger than the sum of its proper divisors (21479).

541561 is a wasteful number, since it uses less digits than its factorization.

541561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263.

The product of its digits is 600, while the sum is 22.

The square root of 541561 is about 735.9082823287. The cubic root of 541561 is about 81.5109197859.

It can be divided in two parts, 5415 and 61, that added together give a square (5476 = 74²).

The spelling of 541561 in words is "five hundred forty-one thousand, five hundred sixty-one".