15717941 has 2 divisors, whose sum is σ = 15717942. Its totient is φ = 15717940.

The previous prime is 15717907. The next prime is 15717943. The reversal of 15717941 is 14971751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15437041 + 280900 = 3929^2 + 530^2 .

It is a cyclic number.

It is not a de Polignac number, because 15717941 - 2¹⁰ = 15716917 is a prime.

Together with 15717943, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15717943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7858970 + 7858971.

It is an arithmetic number, because the mean of its divisors is an integer number (7858971).

Almost surely, 2^15717941 is an apocalyptic number.

It is an amenable number.

15717941 is a deficient number, since it is larger than the sum of its proper divisors (1).

15717941 is an equidigital number, since it uses as much as digits as its factorization.

15717941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8820, while the sum is 35.

The square root of 15717941 is about 3964.5858547899. The cubic root of 15717941 is about 250.4947057525.

The spelling of 15717941 in words is "fifteen million, seven hundred seventeen thousand, nine hundred forty-one".