2021305524 has 96 divisors (see below), whose sum is σ = 5580029952. Its totient is φ = 557280000.

The previous prime is 2021305501. The next prime is 2021305529. The reversal of 2021305524 is 4255031202.

It is a junction number, because it is equal to n+sod(n) for n = 2021305494 and 2021305503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021305529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1121424 + ... + 1123224.

It is an arithmetic number, because the mean of its divisors is an integer number (58125312).

Almost surely, 2^2021305524 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 2021305524, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2790014976).

2021305524 is an abundant number, since it is smaller than the sum of its proper divisors (3558724428).

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

2021305524 is a wasteful number, since it uses less digits than its factorization.

2021305524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2277 (or 2275 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 2021305524 is about 44958.9315264498. The cubic root of 2021305524 is about 1264.3791365538.

Adding to 2021305524 its reverse (4255031202), we get a palindrome (6276336726).

The spelling of 2021305524 in words is "two billion, twenty-one million, three hundred five thousand, five hundred twenty-four".