513182161 has 2 divisors, whose sum is σ = 513182162. Its totient is φ = 513182160.

The previous prime is 513182071. The next prime is 513182261. The reversal of 513182161 is 161281315.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 504271936 + 8910225 = 22456^2 + 2985^2 .

It is a cyclic number.

It is not a de Polignac number, because 513182161 - 2¹⁷ = 513051089 is a prime.

It is not a weakly prime, because it can be changed into another prime (513182261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256591080 + 256591081.

It is an arithmetic number, because the mean of its divisors is an integer number (256591081).

Almost surely, 2^513182161 is an apocalyptic number.

It is an amenable number.

513182161 is a deficient number, since it is larger than the sum of its proper divisors (1).

513182161 is an equidigital number, since it uses as much as digits as its factorization.

513182161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 28.

The square root of 513182161 is about 22653.5242512065. The cubic root of 513182161 is about 800.6152355893.

The spelling of 513182161 in words is "five hundred thirteen million, one hundred eighty-two thousand, one hundred sixty-one".