520215132 has 12 divisors (see below), whose sum is σ = 1213835336. Its totient is φ = 173405040.

The previous prime is 520215121. The next prime is 520215133. The reversal of 520215132 is 231512025.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 520215099 and 520215108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520215133) 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, 21675619 + ... + 21675642.

Almost surely, 2^520215132 is an apocalyptic number.

It is an amenable number.

520215132 is an abundant number, since it is smaller than the sum of its proper divisors (693620204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

520215132 is a wasteful number, since it uses less digits than its factorization.

520215132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43351268 (or 43351266 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 520215132 is about 22808.2250953466. The cubic root of 520215132 is about 804.2560321685.

Adding to 520215132 its reverse (231512025), we get a palindrome (751727157).

The spelling of 520215132 in words is "five hundred twenty million, two hundred fifteen thousand, one hundred thirty-two".