520153230 has 64 divisors (see below), whose sum is σ = 1283143680. Its totient is φ = 134943392.

The previous prime is 520153229. The next prime is 520153237. The reversal of 520153230 is 32351025.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 520153197 and 520153206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520153237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3114607 + ... + 3114773.

It is an arithmetic number, because the mean of its divisors is an integer number (20049120).

Almost surely, 2^520153230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520153230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (641571840).

520153230 is an abundant number, since it is smaller than the sum of its proper divisors (762990450).

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

520153230 is an equidigital number, since it uses as much as digits as its factorization.

520153230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318 (or 224 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 520153230 is about 22806.8680445168. The cubic root of 520153230 is about 804.2241306027.

The spelling of 520153230 in words is "five hundred twenty million, one hundred fifty-three thousand, two hundred thirty".