517404081 has 8 divisors (see below), whose sum is σ = 697623840. Its totient is φ = 341060192.

The previous prime is 517404053. The next prime is 517404103. The reversal of 517404081 is 180404715.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 517404081 - 2⁵ = 517404049 is a prime.

It is a super-2 number, since 2×517404081² = 535413966070909122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (517404001) 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 7 ways as a sum of consecutive naturals, for example, 968655 + ... + 969188.

It is an arithmetic number, because the mean of its divisors is an integer number (87202980).

Almost surely, 2^517404081 is an apocalyptic number.

It is an amenable number.

517404081 is a deficient number, since it is larger than the sum of its proper divisors (180219759).

517404081 is a wasteful number, since it uses less digits than its factorization.

517404081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1937935.

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 517404081 is about 22746.5179972672. The cubic root of 517404081 is about 802.8047805365.

Adding to 517404081 its reverse (180404715), we get a palindrome (697808796).

The spelling of 517404081 in words is "five hundred seventeen million, four hundred four thousand, eighty-one".