1002002051 has 2 divisors, whose sum is σ = 1002002052. Its totient is φ = 1002002050.

The previous prime is 1002002041. The next prime is 1002002093. The reversal of 1002002051 is 1502002001.

It is a weak prime.

It is an emirp because it is prime and its reverse (1502002001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1002002051 - 2¹⁴ = 1001985667 is a prime.

It is a super-2 number, since 2×1002002051² = 2008016220416413202, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1002002021) 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 as a sum of consecutive naturals, namely, 501001025 + 501001026.

It is an arithmetic number, because the mean of its divisors is an integer number (501001026).

Almost surely, 2^1002002051 is an apocalyptic number.

1002002051 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002002051 is an equidigital number, since it uses as much as digits as its factorization.

1002002051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 1002002051 is about 31654.4159794491. The cubic root of 1002002051 is about 1000.6669054716. Note that the first 3 decimals are identical.

Adding to 1002002051 its reverse (1502002001), we get a palindrome (2504004052).

The spelling of 1002002051 in words is "one billion, two million, two thousand, fifty-one".