16587161 has 2 divisors, whose sum is σ = 16587162. Its totient is φ = 16587160.

The previous prime is 16587143. The next prime is 16587169. The reversal of 16587161 is 16178561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12823561 + 3763600 = 3581^2 + 1940^2 .

It is a cyclic number.

It is not a de Polignac number, because 16587161 - 2¹⁴ = 16570777 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16587169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8293580 + 8293581.

It is an arithmetic number, because the mean of its divisors is an integer number (8293581).

Almost surely, 2^16587161 is an apocalyptic number.

It is an amenable number.

16587161 is a deficient number, since it is larger than the sum of its proper divisors (1).

16587161 is an equidigital number, since it uses as much as digits as its factorization.

16587161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 35.

The square root of 16587161 is about 4072.7338484119. The cubic root of 16587161 is about 255.0296569377.

The spelling of 16587161 in words is "sixteen million, five hundred eighty-seven thousand, one hundred sixty-one".