2443452021 has 16 divisors (see below), whose sum is σ = 3623214400. Its totient is φ = 1627489584.

The previous prime is 2443452017. The next prime is 2443452029. The reversal of 2443452021 is 1202543442.

2443452021 is a `hidden beast` number, since 24 + 434 + 5 + 202 + 1 = 666.

It is not a de Polignac number, because 2443452021 - 2² = 2443452017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2443452029) 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, 10351 + ... + 70668.

It is an arithmetic number, because the mean of its divisors is an integer number (226450900).

Almost surely, 2^2443452021 is an apocalyptic number.

It is an amenable number.

2443452021 is a deficient number, since it is larger than the sum of its proper divisors (1179762379).

2443452021 is a wasteful number, since it uses less digits than its factorization.

2443452021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82145 (or 82139 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 2443452021 is about 49431.2858521807. The cubic root of 2443452021 is about 1346.8976812276.

Adding to 2443452021 its reverse (1202543442), we get a palindrome (3645995463).

The spelling of 2443452021 in words is "two billion, four hundred forty-three million, four hundred fifty-two thousand, twenty-one".