515051161 has 2 divisors, whose sum is σ = 515051162. Its totient is φ = 515051160.

The previous prime is 515051093. The next prime is 515051189. The reversal of 515051161 is 161150515.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 459459225 + 55591936 = 21435^2 + 7456^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-515051161 is a prime.

It is not a weakly prime, because it can be changed into another prime (515051461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257525580 + 257525581.

It is an arithmetic number, because the mean of its divisors is an integer number (257525581).

Almost surely, 2^515051161 is an apocalyptic number.

It is an amenable number.

515051161 is a deficient number, since it is larger than the sum of its proper divisors (1).

515051161 is an equidigital number, since it uses as much as digits as its factorization.

515051161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 750, while the sum is 25.

The square root of 515051161 is about 22694.7386193364. The cubic root of 515051161 is about 801.5860000312.

The spelling of 515051161 in words is "five hundred fifteen million, fifty-one thousand, one hundred sixty-one".