515352137 has 2 divisors, whose sum is σ = 515352138. Its totient is φ = 515352136.

The previous prime is 515352121. The next prime is 515352139. The reversal of 515352137 is 731253515.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 507645961 + 7706176 = 22531^2 + 2776^2 .

It is a cyclic number.

It is not a de Polignac number, because 515352137 - 2⁴ = 515352121 is a prime.

It is a super-2 number, since 2×515352137² = 531175650220933538, which contains 22 as substring.

Together with 515352139, 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 (515352139) 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 as a sum of consecutive naturals, namely, 257676068 + 257676069.

It is an arithmetic number, because the mean of its divisors is an integer number (257676069).

Almost surely, 2^515352137 is an apocalyptic number.

It is an amenable number.

515352137 is a deficient number, since it is larger than the sum of its proper divisors (1).

515352137 is an equidigital number, since it uses as much as digits as its factorization.

515352137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15750, while the sum is 32.

The square root of 515352137 is about 22701.3686151298. The cubic root of 515352137 is about 801.7421082573.

The spelling of 515352137 in words is "five hundred fifteen million, three hundred fifty-two thousand, one hundred thirty-seven".