541861 has 8 divisors (see below), whose sum is σ = 579200. Its totient is φ = 506844.

The previous prime is 541859. The next prime is 541889. The reversal of 541861 is 168145.

It is not a de Polignac number, because 541861 - 2¹ = 541859 is a prime.

It is a super-2 number, since 2×541861² = 587226686642, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (541831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6820 + ... + 6898.

It is an arithmetic number, because the mean of its divisors is an integer number (72400).

2⁵⁴¹⁸⁶¹ is an apocalyptic number.

It is an amenable number.

541861 is a deficient number, since it is larger than the sum of its proper divisors (37339).

541861 is an frugal number, since it uses more digits than its factorization.

541861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 98 counting only the distinct ones).

The product of its digits is 960, while the sum is 25.

The square root of 541861 is about 736.1120838568. The cubic root of 541861 is about 81.5259681135.

The spelling of 541861 in words is "five hundred forty-one thousand, eight hundred sixty-one".