2421533500 has 48 divisors (see below), whose sum is σ = 5335555680. Its totient is φ = 960019200.

The previous prime is 2421533461. The next prime is 2421533501. The reversal of 2421533500 is 53351242.

It is a super-3 number, since 3×2421533500³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2421533501) 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, 35071 + ... + 77929.

It is an arithmetic number, because the mean of its divisors is an integer number (111157410).

Almost surely, 2^2421533500 is an apocalyptic number.

2421533500 is a gapful number since it is divisible by the number (20) 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 2421533500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2667777840).

2421533500 is an abundant number, since it is smaller than the sum of its proper divisors (2914022180).

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

2421533500 is a wasteful number, since it uses less digits than its factorization.

2421533500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42991 (or 42979 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 2421533500 is about 49209.0794467850. The cubic root of 2421533500 is about 1342.8582155783.

Adding to 2421533500 its reverse (53351242), we get a palindrome (2474884742).

The spelling of 2421533500 in words is "two billion, four hundred twenty-one million, five hundred thirty-three thousand, five hundred".