41861 has 4 divisors (see below), whose sum is σ = 42924. Its totient is φ = 40800.

The previous prime is 41851. The next prime is 41863. The reversal of 41861 is 16814.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11236 + 30625 = 106^2 + 175^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-41861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41863) 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 3 ways as a sum of consecutive naturals, for example, 470 + ... + 551.

It is an arithmetic number, because the mean of its divisors is an integer number (10731).

2⁴¹⁸⁶¹ is an apocalyptic number.

41861 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

41861 is the 92-nd centered decagonal number.

It is an amenable number.

41861 is a deficient number, since it is larger than the sum of its proper divisors (1063).

41861 is a wasteful number, since it uses less digits than its factorization.

41861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1062.

The product of its digits is 192, while the sum is 20.

The square root of 41861 is about 204.5996089928. The cubic root of 41861 is about 34.7218774247.

The spelling of 41861 in words is "forty-one thousand, eight hundred sixty-one".