6551004001 has 4 divisors (see below), whose sum is σ = 6579120132. Its totient is φ = 6522887872.

The previous prime is 6551003999. The next prime is 6551004017. The reversal of 6551004001 is 1004001556.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2856795601 + 3694208400 = 53449^2 + 60780^2 .

It is a cyclic number.

It is not a de Polignac number, because 6551004001 - 2¹ = 6551003999 is a prime.

It is a super-2 number, since 2×6551004001² = 85831306842236016002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6551005001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14057716 + ... + 14058181.

It is an arithmetic number, because the mean of its divisors is an integer number (1644780033).

Almost surely, 2^6551004001 is an apocalyptic number.

It is an amenable number.

6551004001 is a deficient number, since it is larger than the sum of its proper divisors (28116131).

6551004001 is a wasteful number, since it uses less digits than its factorization.

6551004001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28116130.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 6551004001 is about 80938.2727824112. The cubic root of 6551004001 is about 1871.1242251899.

Adding to 6551004001 its reverse (1004001556), we get a palindrome (7555005557).

The spelling of 6551004001 in words is "six billion, five hundred fifty-one million, four thousand, one".