2021403524 has 24 divisors (see below), whose sum is σ = 4044452160. Its totient is φ = 865963296.

The previous prime is 2021403493. The next prime is 2021403569. The reversal of 2021403524 is 4253041202.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2021403524.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62462 + ... + 89130.

It is an arithmetic number, because the mean of its divisors is an integer number (168518840).

Almost surely, 2^2021403524 is an apocalyptic number.

It is an amenable number.

2021403524 is an abundant number, since it is smaller than the sum of its proper divisors (2023048636).

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

2021403524 is a wasteful number, since it uses less digits than its factorization.

2021403524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29387 (or 29385 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 2021403524 is about 44960.0213967921. The cubic root of 2021403524 is about 1264.3995700725.

Adding to 2021403524 its reverse (4253041202), we get a palindrome (6274444726).

The spelling of 2021403524 in words is "two billion, twenty-one million, four hundred three thousand, five hundred twenty-four".