5178161 has 2 divisors, whose sum is σ = 5178162. Its totient is φ = 5178160.

The previous prime is 5178143. The next prime is 5178163. The reversal of 5178161 is 1618715.

5178161 is nontrivially palindromic in base 13.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4264225 + 913936 = 2065^2 + 956^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5178161 is a prime.

It is a Sophie Germain prime.

Together with 5178163, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (5178163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2589080 + 2589081.

It is an arithmetic number, because the mean of its divisors is an integer number (2589081).

Almost surely, 2^5178161 is an apocalyptic number.

It is an amenable number.

5178161 is a deficient number, since it is larger than the sum of its proper divisors (1).

5178161 is an equidigital number, since it uses as much as digits as its factorization.

5178161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1680, while the sum is 29.

The square root of 5178161 is about 2275.5572943787. The cubic root of 5178161 is about 173.0049448952.

The spelling of 5178161 in words is "five million, one hundred seventy-eight thousand, one hundred sixty-one".