41851 has 2 divisors, whose sum is σ = 41852. Its totient is φ = 41850.

The previous prime is 41849. The next prime is 41863. The reversal of 41851 is 15814.

41851 = 81² + 82² + ... + 86².

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 41851 - 2¹ = 41849 is a prime.

Together with 41849, it forms a pair of twin primes.

It is equal to p₄₃₇₅ and since 41851 and 4375 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (41801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20925 + 20926.

It is an arithmetic number, because the mean of its divisors is an integer number (20926).

2⁴¹⁸⁵¹ is an apocalyptic number.

41851 is a deficient number, since it is larger than the sum of its proper divisors (1).

41851 is an equidigital number, since it uses as much as digits as its factorization.

41851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 160, while the sum is 19.

The square root of 41851 is about 204.5751695588. The cubic root of 41851 is about 34.7191123496.

It can be divided in two parts, 4185 and 1, that added together give a triangular number (4186 = T₉₁).

The spelling of 41851 in words is "forty-one thousand, eight hundred fifty-one".