517797381 has 8 divisors (see below), whose sum is σ = 691181920. Its totient is φ = 344805552.

The previous prime is 517797353. The next prime is 517797431. The reversal of 517797381 is 183797715.

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

It is not a de Polignac number, because 517797381 - 2⁶ = 517797317 is a prime.

It is a super-2 number, since 2×517797381² = 536228255540918322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 517797381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (517790381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95086 + ... + 100383.

It is an arithmetic number, because the mean of its divisors is an integer number (86397740).

Almost surely, 2^517797381 is an apocalyptic number.

It is an amenable number.

517797381 is a deficient number, since it is larger than the sum of its proper divisors (173384539).

517797381 is a wasteful number, since it uses less digits than its factorization.

517797381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196355.

The product of its digits is 370440, while the sum is 48.

The square root of 517797381 is about 22755.1616342315. The cubic root of 517797381 is about 803.0081439311.

The spelling of 517797381 in words is "five hundred seventeen million, seven hundred ninety-seven thousand, three hundred eighty-one".