506112161 has 2 divisors, whose sum is σ = 506112162. Its totient is φ = 506112160.

The previous prime is 506112127. The next prime is 506112223. The reversal of 506112161 is 161211605.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 280361536 + 225750625 = 16744^2 + 15025^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-506112161 is a prime.

It is a super-2 number, since 2×506112161² = 512299039024179842, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (506112361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253056080 + 253056081.

It is an arithmetic number, because the mean of its divisors is an integer number (253056081).

Almost surely, 2^506112161 is an apocalyptic number.

It is an amenable number.

506112161 is a deficient number, since it is larger than the sum of its proper divisors (1).

506112161 is an equidigital number, since it uses as much as digits as its factorization.

506112161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 506112161 is about 22496.9367025824. The cubic root of 506112161 is about 796.9215865954.

Adding to 506112161 its reverse (161211605), we get a palindrome (667323766).

The spelling of 506112161 in words is "five hundred six million, one hundred twelve thousand, one hundred sixty-one".