517742307 has 36 divisors (see below), whose sum is σ = 799682520. Its totient is φ = 331052400.

The previous prime is 517742263. The next prime is 517742311. The reversal of 517742307 is 703247715.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is not a de Polignac number, because 517742307 - 2⁶ = 517742243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (517742707) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3428682 + ... + 3428832.

Almost surely, 2^517742307 is an apocalyptic number.

517742307 is a deficient number, since it is larger than the sum of its proper divisors (281940213).

517742307 is an equidigital number, since it uses as much as digits as its factorization.

517742307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369 (or 183 counting only the distinct ones).

The product of its (nonzero) digits is 41160, while the sum is 36.

The square root of 517742307 is about 22753.9514590323. The cubic root of 517742307 is about 802.9796730529.

The spelling of 517742307 in words is "five hundred seventeen million, seven hundred forty-two thousand, three hundred seven".