2002051251 has 6 divisors (see below), whose sum is σ = 2891851820. Its totient is φ = 1334700828.

The previous prime is 2002051201. The next prime is 2002051267. The reversal of 2002051251 is 1521502002.

It is not a de Polignac number, because 2002051251 - 2¹⁰ = 2002050227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2002051201) 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 5 ways as a sum of consecutive naturals, for example, 111225061 + ... + 111225078.

Almost surely, 2^2002051251 is an apocalyptic number.

2002051251 is a deficient number, since it is larger than the sum of its proper divisors (889800569).

2002051251 is a wasteful number, since it uses less digits than its factorization.

2002051251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222450145 (or 222450142 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 2002051251 is about 44744.2873560413. The cubic root of 2002051251 is about 1260.3516384398.

Adding to 2002051251 its reverse (1521502002), we get a palindrome (3523553253).

The spelling of 2002051251 in words is "two billion, two million, fifty-one thousand, two hundred fifty-one".