6551005001 has 2 divisors, whose sum is σ = 6551005002. Its totient is φ = 6551005000.

The previous prime is 6551004973. The next prime is 6551005007. The reversal of 6551005001 is 1005001556.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4995096976 + 1555908025 = 70676^2 + 39445^2 .

It is a cyclic number.

It is not a de Polignac number, because 6551005001 - 2⁶ = 6551004937 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (6551005007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3275502500 + 3275502501.

It is an arithmetic number, because the mean of its divisors is an integer number (3275502501).

Almost surely, 2^6551005001 is an apocalyptic number.

It is an amenable number.

6551005001 is a deficient number, since it is larger than the sum of its proper divisors (1).

6551005001 is an equidigital number, since it uses as much as digits as its factorization.

6551005001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 6551005001 is about 80938.2789599581. The cubic root of 6551005001 is about 1871.1243203979.

Adding to 6551005001 its reverse (1005001556), we get a palindrome (7556006557).

The spelling of 6551005001 in words is "six billion, five hundred fifty-one million, five thousand, one".