520875630 has 128 divisors (see below), whose sum is σ = 1534256640. Its totient is φ = 124692480.

The previous prime is 520875629. The next prime is 520875637. The reversal of 520875630 is 36578025.

520875630 is a `hidden beast` number, since 520 + 8 + 75 + 63 + 0 = 666.

It is a super-2 number, since 2×520875630² = 542622843855793800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520875637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 245454 + ... + 247566.

It is an arithmetic number, because the mean of its divisors is an integer number (11986380).

Almost surely, 2^520875630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520875630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (767128320).

520875630 is an abundant number, since it is smaller than the sum of its proper divisors (1013381010).

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

520875630 is a wasteful number, since it uses less digits than its factorization.

520875630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2223 (or 2217 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 520875630 is about 22822.6998841066. The cubic root of 520875630 is about 804.5962663059.

The spelling of 520875630 in words is "five hundred twenty million, eight hundred seventy-five thousand, six hundred thirty".