516208493 has 2 divisors, whose sum is σ = 516208494. Its totient is φ = 516208492.

The previous prime is 516208403. The next prime is 516208529. The reversal of 516208493 is 394802615.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 483912004 + 32296489 = 21998^2 + 5683^2 .

It is a cyclic number.

It is not a de Polignac number, because 516208493 - 2¹² = 516204397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (516208403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258104246 + 258104247.

It is an arithmetic number, because the mean of its divisors is an integer number (258104247).

Almost surely, 2^516208493 is an apocalyptic number.

It is an amenable number.

516208493 is a deficient number, since it is larger than the sum of its proper divisors (1).

516208493 is an equidigital number, since it uses as much as digits as its factorization.

516208493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 516208493 is about 22720.2221159917. Note that the first 3 decimals coincide. The cubic root of 516208493 is about 802.1859450526.

The spelling of 516208493 in words is "five hundred sixteen million, two hundred eight thousand, four hundred ninety-three".