41543987 has 2 divisors, whose sum is σ = 41543988. Its totient is φ = 41543986.

The previous prime is 41543981. The next prime is 41544011. The reversal of 41543987 is 78934514.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 41543987 - 2¹⁸ = 41281843 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (41543981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20771993 + 20771994.

It is an arithmetic number, because the mean of its divisors is an integer number (20771994).

Almost surely, 2^41543987 is an apocalyptic number.

41543987 is a deficient number, since it is larger than the sum of its proper divisors (1).

41543987 is an equidigital number, since it uses as much as digits as its factorization.

41543987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 41.

The square root of 41543987 is about 6445.4625124967. The cubic root of 41543987 is about 346.3400573785.

The spelling of 41543987 in words is "forty-one million, five hundred forty-three thousand, nine hundred eighty-seven".