4520021000 has 128 divisors (see below), whose sum is σ = 11712504960. Its totient is φ = 1618848000.

The previous prime is 4520020991. The next prime is 4520021003. The reversal of 4520021000 is 1200254.

It is not an unprimeable number, because it can be changed into a prime (4520021003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 733934 + ... + 740066.

It is an arithmetic number, because the mean of its divisors is an integer number (91503945).

Almost surely, 2^4520021000 is an apocalyptic number.

4520021000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4520021000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5856252480).

4520021000 is an abundant number, since it is smaller than the sum of its proper divisors (7192483960).

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

4520021000 is a wasteful number, since it uses less digits than its factorization.

4520021000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6232 (or 6218 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 4520021000 is about 67231.1014337858. The cubic root of 4520021000 is about 1653.4084424703.

Adding to 4520021000 its reverse (1200254), we get a palindrome (4521221254).

The spelling of 4520021000 in words is "four billion, five hundred twenty million, twenty-one thousand".