8521201852 has 24 divisors (see below), whose sum is σ = 15702881040. Its totient is φ = 4034833920.

The previous prime is 8521201837. The next prime is 8521201853. The reversal of 8521201852 is 2581021258.

It is a happy number.

It is a super-2 number, since 2×8521201852² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8521201853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195852 + ... + 235372.

It is an arithmetic number, because the mean of its divisors is an integer number (654286710).

Almost surely, 2^8521201852 is an apocalyptic number.

It is an amenable number.

8521201852 is a deficient number, since it is larger than the sum of its proper divisors (7181679188).

8521201852 is a wasteful number, since it uses less digits than its factorization.

8521201852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42381 (or 42379 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 34.

The square root of 8521201852 is about 92310.3561470759. The cubic root of 8521201852 is about 2042.5229783074.

The spelling of 8521201852 in words is "eight billion, five hundred twenty-one million, two hundred one thousand, eight hundred fifty-two".