517953493 has 2 divisors, whose sum is σ = 517953494. Its totient is φ = 517953492.

The previous prime is 517953481. The next prime is 517953511. The reversal of 517953493 is 394359715.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 261889489 + 256064004 = 16183^2 + 16002^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-517953493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (517953463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258976746 + 258976747.

It is an arithmetic number, because the mean of its divisors is an integer number (258976747).

Almost surely, 2^517953493 is an apocalyptic number.

It is an amenable number.

517953493 is a deficient number, since it is larger than the sum of its proper divisors (1).

517953493 is an equidigital number, since it uses as much as digits as its factorization.

517953493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 510300, while the sum is 46.

The square root of 517953493 is about 22758.5916304151. The cubic root of 517953493 is about 803.0888361193.

The spelling of 517953493 in words is "five hundred seventeen million, nine hundred fifty-three thousand, four hundred ninety-three".