517075661 has 8 divisors (see below), whose sum is σ = 523597824. Its totient is φ = 510581200.

The previous prime is 517075651. The next prime is 517075667. The reversal of 517075661 is 166570715.

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 517075661 - 2²² = 512881357 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 (517075667) 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, 32000 + ... + 45366.

It is an arithmetic number, because the mean of its divisors is an integer number (65449728).

Almost surely, 2^517075661 is an apocalyptic number.

It is an amenable number.

517075661 is a deficient number, since it is larger than the sum of its proper divisors (6522163).

517075661 is a wasteful number, since it uses less digits than its factorization.

517075661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13851.

The product of its (nonzero) digits is 44100, while the sum is 38.

The square root of 517075661 is about 22739.2977244241. The cubic root of 517075661 is about 802.6348856320.

The spelling of 517075661 in words is "five hundred seventeen million, seventy-five thousand, six hundred sixty-one".