517681055 has 8 divisors (see below), whose sum is σ = 627368544. Its totient is φ = 410044000.

The previous prime is 517681037. The next prime is 517681057. The reversal of 517681055 is 550186715.

It is a happy number.

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

It is not a de Polignac number, because 517681055 - 2¹² = 517676959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (517681057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 512051 + ... + 513060.

It is an arithmetic number, because the mean of its divisors is an integer number (78421068).

Almost surely, 2^517681055 is an apocalyptic number.

517681055 is a deficient number, since it is larger than the sum of its proper divisors (109687489).

517681055 is a wasteful number, since it uses less digits than its factorization.

517681055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1025217.

The product of its (nonzero) digits is 42000, while the sum is 38.

The square root of 517681055 is about 22752.6054552001. The cubic root of 517681055 is about 802.9480060440.

The spelling of 517681055 in words is "five hundred seventeen million, six hundred eighty-one thousand, fifty-five".