516247139 has 2 divisors, whose sum is σ = 516247140. Its totient is φ = 516247138.

The previous prime is 516247133. The next prime is 516247153. The reversal of 516247139 is 931742615.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 516247139 - 2⁸ = 516246883 is a prime.

It is a super-2 number, since 2×516247139² = 533022217051370642, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (516247133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258123569 + 258123570.

It is an arithmetic number, because the mean of its divisors is an integer number (258123570).

Almost surely, 2^516247139 is an apocalyptic number.

516247139 is a deficient number, since it is larger than the sum of its proper divisors (1).

516247139 is an equidigital number, since it uses as much as digits as its factorization.

516247139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 38.

The square root of 516247139 is about 22721.0725759151. The cubic root of 516247139 is about 802.2059631298.

The spelling of 516247139 in words is "five hundred sixteen million, two hundred forty-seven thousand, one hundred thirty-nine".