518252971 has 2 divisors, whose sum is σ = 518252972. Its totient is φ = 518252970.

The previous prime is 518252957. The next prime is 518252981. The reversal of 518252971 is 179252815.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 518252971 - 2²³ = 509864363 is a prime.

It is a super-2 number, since 2×518252971² = 537172283900653682, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (518252981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 259126485 + 259126486.

It is an arithmetic number, because the mean of its divisors is an integer number (259126486).

Almost surely, 2^518252971 is an apocalyptic number.

518252971 is a deficient number, since it is larger than the sum of its proper divisors (1).

518252971 is an equidigital number, since it uses as much as digits as its factorization.

518252971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50400, while the sum is 40.

The square root of 518252971 is about 22765.1701289492. The cubic root of 518252971 is about 803.2435868857.

The spelling of 518252971 in words is "five hundred eighteen million, two hundred fifty-two thousand, nine hundred seventy-one".