516426247 has 2 divisors, whose sum is σ = 516426248. Its totient is φ = 516426246.

The previous prime is 516426139. The next prime is 516426257. The reversal of 516426247 is 742624615.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-516426247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (516426257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258213123 + 258213124.

It is an arithmetic number, because the mean of its divisors is an integer number (258213124).

Almost surely, 2^516426247 is an apocalyptic number.

516426247 is a deficient number, since it is larger than the sum of its proper divisors (1).

516426247 is an equidigital number, since it uses as much as digits as its factorization.

516426247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 37.

The square root of 516426247 is about 22725.0136853644. The cubic root of 516426247 is about 802.2987254792.

The spelling of 516426247 in words is "five hundred sixteen million, four hundred twenty-six thousand, two hundred forty-seven".