4521132220 has 48 divisors (see below), whose sum is σ = 10387022688. Its totient is φ = 1639362560.

The previous prime is 4521132191. The next prime is 4521132221. The reversal of 4521132220 is 222311254.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 4521132191 and 4521132200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4521132221) 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, 48552 + ... + 106768.

It is an arithmetic number, because the mean of its divisors is an integer number (216396306).

Almost surely, 2^4521132220 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 4521132220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5193511344).

4521132220 is an abundant number, since it is smaller than the sum of its proper divisors (5865890468).

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

4521132220 is a wasteful number, since it uses less digits than its factorization.

4521132220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58590 (or 58588 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 4521132220 is about 67239.3651070561. The cubic root of 4521132220 is about 1653.5439248782.

Adding to 4521132220 its reverse (222311254), we get a palindrome (4743443474).

The spelling of 4521132220 in words is "four billion, five hundred twenty-one million, one hundred thirty-two thousand, two hundred twenty".