16671157 has 2 divisors, whose sum is σ = 16671158. Its totient is φ = 16671156.

The previous prime is 16671121. The next prime is 16671167. The reversal of 16671157 is 75117661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16072081 + 599076 = 4009^2 + 774^2 .

It is an emirp because it is prime and its reverse (75117661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16671157 - 2¹¹ = 16669109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16671167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8335578 + 8335579.

It is an arithmetic number, because the mean of its divisors is an integer number (8335579).

Almost surely, 2^16671157 is an apocalyptic number.

It is an amenable number.

16671157 is a deficient number, since it is larger than the sum of its proper divisors (1).

16671157 is an equidigital number, since it uses as much as digits as its factorization.

16671157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8820, while the sum is 34.

The square root of 16671157 is about 4083.0328188737. The cubic root of 16671157 is about 255.4594153033.

The spelling of 16671157 in words is "sixteen million, six hundred seventy-one thousand, one hundred fifty-seven".