515222241 has 8 divisors (see below), whose sum is σ = 716831040. Its totient is φ = 328547472.

The previous prime is 515222237. The next prime is 515222243. The reversal of 515222241 is 142222515.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 515222241 - 2² = 515222237 is a prime.

It is not an unprimeable number, because it can be changed into a prime (515222243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3733426 + ... + 3733563.

It is an arithmetic number, because the mean of its divisors is an integer number (89603880).

Almost surely, 2^515222241 is an apocalyptic number.

It is an amenable number.

515222241 is a deficient number, since it is larger than the sum of its proper divisors (201608799).

515222241 is a wasteful number, since it uses less digits than its factorization.

515222241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7467015.

The product of its digits is 1600, while the sum is 24.

The square root of 515222241 is about 22698.5074619456. The cubic root of 515222241 is about 801.6747421229.

Adding to 515222241 its reverse (142222515), we get a palindrome (657444756).

The spelling of 515222241 in words is "five hundred fifteen million, two hundred twenty-two thousand, two hundred forty-one".