15788161 has 2 divisors, whose sum is σ = 15788162. Its totient is φ = 15788160.

The previous prime is 15788147. The next prime is 15788167. The reversal of 15788161 is 16188751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12250000 + 3538161 = 3500^2 + 1881^2 .

It is a cyclic number.

It is not a de Polignac number, because 15788161 - 2¹³ = 15779969 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15788161.

It is not a weakly prime, because it can be changed into another prime (15788167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7894080 + 7894081.

It is an arithmetic number, because the mean of its divisors is an integer number (7894081).

Almost surely, 2^15788161 is an apocalyptic number.

It is an amenable number.

15788161 is a deficient number, since it is larger than the sum of its proper divisors (1).

15788161 is an equidigital number, since it uses as much as digits as its factorization.

15788161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13440, while the sum is 37.

The square root of 15788161 is about 3973.4318919544. The cubic root of 15788161 is about 250.8671805138.

The spelling of 15788161 in words is "fifteen million, seven hundred eighty-eight thousand, one hundred sixty-one".