15882161 has 2 divisors, whose sum is σ = 15882162. Its totient is φ = 15882160.

The previous prime is 15882089. The next prime is 15882173. The reversal of 15882161 is 16128851.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15880225 + 1936 = 3985^2 + 44^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15882161 is a prime.

It is not a weakly prime, because it can be changed into another prime (15882661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7941080 + 7941081.

It is an arithmetic number, because the mean of its divisors is an integer number (7941081).

Almost surely, 2^15882161 is an apocalyptic number.

It is an amenable number.

15882161 is a deficient number, since it is larger than the sum of its proper divisors (1).

15882161 is an equidigital number, since it uses as much as digits as its factorization.

15882161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3840, while the sum is 32.

The square root of 15882161 is about 3985.2429035129. The cubic root of 15882161 is about 251.3640690592.

The spelling of 15882161 in words is "fifteen million, eight hundred eighty-two thousand, one hundred sixty-one".