506081161 has 2 divisors, whose sum is σ = 506081162. Its totient is φ = 506081160.

The previous prime is 506081141. The next prime is 506081183. The reversal of 506081161 is 161180605.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 456463225 + 49617936 = 21365^2 + 7044^2 .

It is a cyclic number.

It is not a de Polignac number, because 506081161 - 2¹⁹ = 505556873 is a prime.

It is a super-2 number, since 2×506081161² = 512236283038215842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (506081141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253040580 + 253040581.

It is an arithmetic number, because the mean of its divisors is an integer number (253040581).

Almost surely, 2^506081161 is an apocalyptic number.

It is an amenable number.

506081161 is a deficient number, since it is larger than the sum of its proper divisors (1).

506081161 is an equidigital number, since it uses as much as digits as its factorization.

506081161 is an odious number, because the sum of its binary digits is odd.

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

The square root of 506081161 is about 22496.2477093403. The cubic root of 506081161 is about 796.9053154501.

The spelling of 506081161 in words is "five hundred six million, eighty-one thousand, one hundred sixty-one".