517045431 has 16 divisors (see below), whose sum is σ = 792902144. Its totient is φ = 293570784.

The previous prime is 517045421. The next prime is 517045433. The reversal of 517045431 is 134540715.

It is not a de Polignac number, because 517045431 - 2⁶ = 517045367 is a prime.

It is a super-2 number, since 2×517045431² = 534671955435951522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (517045433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75115 + ... + 81708.

It is an arithmetic number, because the mean of its divisors is an integer number (49556384).

Almost surely, 2^517045431 is an apocalyptic number.

517045431 is a deficient number, since it is larger than the sum of its proper divisors (275856713).

517045431 is a wasteful number, since it uses less digits than its factorization.

517045431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156990.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 517045431 is about 22738.6330064056. The cubic root of 517045431 is about 802.6192437397.

The spelling of 517045431 in words is "five hundred seventeen million, forty-five thousand, four hundred thirty-one".