4721543520 has 96 divisors (see below), whose sum is σ = 14887242720. Its totient is φ = 1257861120.

The previous prime is 4721543509. The next prime is 4721543537. The reversal of 4721543520 is 253451274.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×4721543520² = 44585946422507980800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 562716 + ... + 571044.

It is an arithmetic number, because the mean of its divisors is an integer number (155075445).

Almost surely, 2^4721543520 is an apocalyptic number.

4721543520 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 4721543520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7443621360).

4721543520 is an abundant number, since it is smaller than the sum of its proper divisors (10165699200).

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

4721543520 is a wasteful number, since it uses less digits than its factorization.

4721543520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9528 (or 9520 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 33.

The square root of 4721543520 is about 68713.4886321456. The cubic root of 4721543520 is about 1677.6241359567.

Adding to 4721543520 its reverse (253451274), we get a palindrome (4974994794).

The spelling of 4721543520 in words is "four billion, seven hundred twenty-one million, five hundred forty-three thousand, five hundred twenty".