16157161 has 2 divisors, whose sum is σ = 16157162. Its totient is φ = 16157160.

The previous prime is 16157129. The next prime is 16157171. The reversal of 16157161 is 16175161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15960025 + 197136 = 3995^2 + 444^2 .

It is an emirp because it is prime and its reverse (16175161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16157161 - 2⁵ = 16157129 is a prime.

It is a super-2 number, since 2×16157161² = 522107703159842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16157101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8078580 + 8078581.

It is an arithmetic number, because the mean of its divisors is an integer number (8078581).

Almost surely, 2^16157161 is an apocalyptic number.

It is an amenable number.

16157161 is a deficient number, since it is larger than the sum of its proper divisors (1).

16157161 is an equidigital number, since it uses as much as digits as its factorization.

16157161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1260, while the sum is 28.

The square root of 16157161 is about 4019.5971191153. The cubic root of 16157161 is about 252.8065668276.

The spelling of 16157161 in words is "sixteen million, one hundred fifty-seven thousand, one hundred sixty-one".