521134679 has 8 divisors (see below), whose sum is σ = 590760240. Its totient is φ = 455728896.

The previous prime is 521134631. The next prime is 521134699. The reversal of 521134679 is 976431125.

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 521134679 - 2⁸ = 521134423 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 (521134699) 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, 1054682 + ... + 1055175.

It is an arithmetic number, because the mean of its divisors is an integer number (73845030).

Almost surely, 2^521134679 is an apocalyptic number.

521134679 is a deficient number, since it is larger than the sum of its proper divisors (69625561).

521134679 is a wasteful number, since it uses less digits than its factorization.

521134679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2109889.

The product of its digits is 45360, while the sum is 38.

The square root of 521134679 is about 22828.3744274532. The cubic root of 521134679 is about 804.7296284770.

The spelling of 521134679 in words is "five hundred twenty-one million, one hundred thirty-four thousand, six hundred seventy-nine".