2002021535 has 4 divisors (see below), whose sum is σ = 2402425848. Its totient is φ = 1601617224.

The previous prime is 2002021531. The next prime is 2002021537. The reversal of 2002021535 is 5351202002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2002021535 - 2² = 2002021531 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002021531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200202149 + ... + 200202158.

It is an arithmetic number, because the mean of its divisors is an integer number (600606462).

Almost surely, 2^2002021535 is an apocalyptic number.

2002021535 is a deficient number, since it is larger than the sum of its proper divisors (400404313).

2002021535 is an equidigital number, since it uses as much as digits as its factorization.

2002021535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400404312.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 2002021535 is about 44743.9552900724. The cubic root of 2002021535 is about 1260.3454027029.

Adding to 2002021535 its reverse (5351202002), we get a palindrome (7353223537).

The spelling of 2002021535 in words is "two billion, two million, twenty-one thousand, five hundred thirty-five".