15887141 has 2 divisors, whose sum is σ = 15887142. Its totient is φ = 15887140.

The previous prime is 15887111. The next prime is 15887143. The reversal of 15887141 is 14178851.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14984641 + 902500 = 3871^2 + 950^2 .

It is an emirp because it is prime and its reverse (14178851) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15887141 is a prime.

It is a Sophie Germain prime.

Together with 15887143, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15887143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7943570 + 7943571.

It is an arithmetic number, because the mean of its divisors is an integer number (7943571).

Almost surely, 2^15887141 is an apocalyptic number.

It is an amenable number.

15887141 is a deficient number, since it is larger than the sum of its proper divisors (1).

15887141 is an equidigital number, since it uses as much as digits as its factorization.

15887141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8960, while the sum is 35.

The square root of 15887141 is about 3985.8676596194. The cubic root of 15887141 is about 251.3903388313.

The spelling of 15887141 in words is "fifteen million, eight hundred eighty-seven thousand, one hundred forty-one".