41640523 has 2 divisors, whose sum is σ = 41640524. Its totient is φ = 41640522.

The previous prime is 41640517. The next prime is 41640539. The reversal of 41640523 is 32504614.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-41640523 is a prime.

It is not a weakly prime, because it can be changed into another prime (41640553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20820261 + 20820262.

It is an arithmetic number, because the mean of its divisors is an integer number (20820262).

Almost surely, 2^41640523 is an apocalyptic number.

41640523 is a deficient number, since it is larger than the sum of its proper divisors (1).

41640523 is an equidigital number, since it uses as much as digits as its factorization.

41640523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 41640523 is about 6452.9468462091. The cubic root of 41640523 is about 346.6081139809.

The spelling of 41640523 in words is "forty-one million, six hundred forty thousand, five hundred twenty-three".