515022241 has 2 divisors, whose sum is σ = 515022242. Its totient is φ = 515022240.

The previous prime is 515022239. The next prime is 515022283. The reversal of 515022241 is 142220515.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 287133025 + 227889216 = 16945^2 + 15096^2 .

It is a cyclic number.

It is not a de Polignac number, because 515022241 - 2¹ = 515022239 is a prime.

Together with 515022239, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (515022841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257511120 + 257511121.

It is an arithmetic number, because the mean of its divisors is an integer number (257511121).

Almost surely, 2^515022241 is an apocalyptic number.

It is an amenable number.

515022241 is a deficient number, since it is larger than the sum of its proper divisors (1).

515022241 is an equidigital number, since it uses as much as digits as its factorization.

515022241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 515022241 is about 22694.1014583085. The cubic root of 515022241 is about 801.5709967961.

Adding to 515022241 its reverse (142220515), we get a palindrome (657242756).

The spelling of 515022241 in words is "five hundred fifteen million, twenty-two thousand, two hundred forty-one".