521130679 has 8 divisors (see below), whose sum is σ = 523908000. Its totient is φ = 518360736.

The previous prime is 521130671. The next prime is 521130683. The reversal of 521130679 is 976031125.

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 521130679 - 2³ = 521130671 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 (521130671) 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, 188197 + ... + 190945.

It is an arithmetic number, because the mean of its divisors is an integer number (65488500).

Almost surely, 2^521130679 is an apocalyptic number.

521130679 is a deficient number, since it is larger than the sum of its proper divisors (2777321).

521130679 is a wasteful number, since it uses less digits than its factorization.

521130679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3689.

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 521130679 is about 22828.2868170172. The cubic root of 521130679 is about 804.7275695551.

The spelling of 521130679 in words is "five hundred twenty-one million, one hundred thirty thousand, six hundred seventy-nine".