4521550000 has 120 divisors (see below), whose sum is σ = 11946829104. Its totient is φ = 1644000000.

The previous prime is 4521549983. The next prime is 4521550003. The reversal of 4521550000 is 551254.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4521550003) 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 23 ways as a sum of consecutive naturals, for example, 545890 + ... + 554110.

Almost surely, 2^4521550000 is an apocalyptic number.

4521550000 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 4521550000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5973414552).

4521550000 is an abundant number, since it is smaller than the sum of its proper divisors (7425279104).

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

4521550000 is an equidigital number, since it uses as much as digits as its factorization.

4521550000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8265 (or 8239 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 4521550000 is about 67242.4716975811. The cubic root of 4521550000 is about 1653.5948558007.

The spelling of 4521550000 in words is "four billion, five hundred twenty-one million, five hundred fifty thousand".