521055168 has 112 divisors (see below), whose sum is σ = 1484217504. Its totient is φ = 160727040.

The previous prime is 521055163. The next prime is 521055193. The reversal of 521055168 is 861550125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521055163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197796 + ... + 200412.

It is an arithmetic number, because the mean of its divisors is an integer number (13251942).

Almost surely, 2^521055168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 521055168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (742108752).

521055168 is an abundant number, since it is smaller than the sum of its proper divisors (963162336).

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

521055168 is a wasteful number, since it uses less digits than its factorization.

521055168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2710 (or 2700 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 33.

The square root of 521055168 is about 22826.6328660186. The cubic root of 521055168 is about 804.6886997661.

It can be divided in two parts, 5210 and 55168, that added together give a triangular number (60378 = T₃₄₇).

The spelling of 521055168 in words is "five hundred twenty-one million, fifty-five thousand, one hundred sixty-eight".