4442002521 has 16 divisors (see below), whose sum is σ = 6463696320. Its totient is φ = 2691038720.

The previous prime is 4442002519. The next prime is 4442002547. The reversal of 4442002521 is 1252002444.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 4442002521 - 2¹ = 4442002519 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4442002491 and 4442002500.

It is not an unprimeable number, because it can be changed into a prime (4442002421) by changing a digit.

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, 60301 + ... + 111893.

It is an arithmetic number, because the mean of its divisors is an integer number (403981020).

Almost surely, 2^4442002521 is an apocalyptic number.

It is an amenable number.

4442002521 is a deficient number, since it is larger than the sum of its proper divisors (2021693799).

4442002521 is a wasteful number, since it uses less digits than its factorization.

4442002521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54216.

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 4442002521 is about 66648.3497245056. The cubic root of 4442002521 is about 1643.8402126685.

Adding to 4442002521 its reverse (1252002444), we get a palindrome (5694004965).

The spelling of 4442002521 in words is "four billion, four hundred forty-two million, two thousand, five hundred twenty-one".