521134133 has 8 divisors (see below), whose sum is σ = 594234648. Its totient is φ = 452749824.

The previous prime is 521134127. The next prime is 521134151. The reversal of 521134133 is 331431125.

It can be written as a sum of positive squares in 4 ways, for example, as 1385329 + 519748804 = 1177^2 + 22798^2 .

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 521134133 - 2¹² = 521130037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 521134099 and 521134108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521134153) 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, 1178816 + ... + 1179257.

It is an arithmetic number, because the mean of its divisors is an integer number (74279331).

Almost surely, 2^521134133 is an apocalyptic number.

It is an amenable number.

521134133 is a deficient number, since it is larger than the sum of its proper divisors (73100515).

521134133 is a wasteful number, since it uses less digits than its factorization.

521134133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2358103.

The product of its digits is 1080, while the sum is 23.

The square root of 521134133 is about 22828.3624686485. The cubic root of 521134133 is about 804.7293474348.

Adding to 521134133 its reverse (331431125), we get a palindrome (852565258).

The spelling of 521134133 in words is "five hundred twenty-one million, one hundred thirty-four thousand, one hundred thirty-three".