41013509 has 2 divisors, whose sum is σ = 41013510. Its totient is φ = 41013508.

The previous prime is 41013499. The next prime is 41013541. The reversal of 41013509 is 90531014.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39413284 + 1600225 = 6278^2 + 1265^2 .

It is a cyclic number.

It is not a de Polignac number, because 41013509 - 2⁴ = 41013493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41013559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20506754 + 20506755.

It is an arithmetic number, because the mean of its divisors is an integer number (20506755).

Almost surely, 2^41013509 is an apocalyptic number.

It is an amenable number.

41013509 is a deficient number, since it is larger than the sum of its proper divisors (1).

41013509 is an equidigital number, since it uses as much as digits as its factorization.

41013509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 41013509 is about 6404.1790262297. The cubic root of 41013509 is about 344.8595913973.

The spelling of 41013509 in words is "forty-one million, thirteen thousand, five hundred nine".