41509613 has 2 divisors, whose sum is σ = 41509614. Its totient is φ = 41509612.

The previous prime is 41509571. The next prime is 41509619. The reversal of 41509613 is 31690514.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40729924 + 779689 = 6382^2 + 883^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-41509613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41509619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20754806 + 20754807.

It is an arithmetic number, because the mean of its divisors is an integer number (20754807).

Almost surely, 2^41509613 is an apocalyptic number.

It is an amenable number.

41509613 is a deficient number, since it is larger than the sum of its proper divisors (1).

41509613 is an equidigital number, since it uses as much as digits as its factorization.

41509613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 41509613 is about 6442.7954336608. The cubic root of 41509613 is about 346.2445090294.

The spelling of 41509613 in words is "forty-one million, five hundred nine thousand, six hundred thirteen".