6651101 has 2 divisors, whose sum is σ = 6651102. Its totient is φ = 6651100.

The previous prime is 6651091. The next prime is 6651107. The reversal of 6651101 is 1011566.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5885476 + 765625 = 2426^2 + 875^2 .

It is a cyclic number.

It is not a de Polignac number, because 6651101 - 2¹⁴ = 6634717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6651107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3325550 + 3325551.

It is an arithmetic number, because the mean of its divisors is an integer number (3325551).

Almost surely, 2^6651101 is an apocalyptic number.

It is an amenable number.

6651101 is a deficient number, since it is larger than the sum of its proper divisors (1).

6651101 is an equidigital number, since it uses as much as digits as its factorization.

6651101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 6651101 is about 2578.9728575540. The cubic root of 6651101 is about 188.0606130948.

Adding to 6651101 its reverse (1011566), we get a palindrome (7662667).

The spelling of 6651101 in words is "six million, six hundred fifty-one thousand, one hundred one".