15613841 has 2 divisors, whose sum is σ = 15613842. Its totient is φ = 15613840.

The previous prime is 15613831. The next prime is 15613847. The reversal of 15613841 is 14831651.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15249025 + 364816 = 3905^2 + 604^2 .

It is an emirp because it is prime and its reverse (14831651) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15613841 - 2⁶ = 15613777 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (15613847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7806920 + 7806921.

It is an arithmetic number, because the mean of its divisors is an integer number (7806921).

Almost surely, 2^15613841 is an apocalyptic number.

It is an amenable number.

15613841 is a deficient number, since it is larger than the sum of its proper divisors (1).

15613841 is an equidigital number, since it uses as much as digits as its factorization.

15613841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880, while the sum is 29.

The square root of 15613841 is about 3951.4353088466. The cubic root of 15613841 is about 249.9404711597.

The spelling of 15613841 in words is "fifteen million, six hundred thirteen thousand, eight hundred forty-one".