520132213 has 4 divisors (see below), whose sum is σ = 522066060. Its totient is φ = 518198368.

The previous prime is 520132169. The next prime is 520132219. The reversal of 520132213 is 312231025.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14691889 + 505440324 = 3833^2 + 22482^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520132213 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 (520132219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 966520 + ... + 967057.

It is an arithmetic number, because the mean of its divisors is an integer number (130516515).

Almost surely, 2^520132213 is an apocalyptic number.

It is an amenable number.

520132213 is a deficient number, since it is larger than the sum of its proper divisors (1933847).

520132213 is a wasteful number, since it uses less digits than its factorization.

520132213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1933846.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 520132213 is about 22806.4072795344. The cubic root of 520132213 is about 804.2132987906.

Adding to 520132213 its reverse (312231025), we get a palindrome (832363238).

The spelling of 520132213 in words is "five hundred twenty million, one hundred thirty-two thousand, two hundred thirteen".