6601100501 has 2 divisors, whose sum is σ = 6601100502. Its totient is φ = 6601100500.

The previous prime is 6601100489. The next prime is 6601100521. The reversal of 6601100501 is 1050011066.

It is a happy number.

6601100501 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (6601100521) can be obtained adding 6601100501 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6455319025 + 145781476 = 80345^2 + 12074^2 .

It is a cyclic number.

It is not a de Polignac number, because 6601100501 - 2¹⁸ = 6600838357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6601100521) 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, 3300550250 + 3300550251.

It is an arithmetic number, because the mean of its divisors is an integer number (3300550251).

Almost surely, 2^6601100501 is an apocalyptic number.

It is an amenable number.

6601100501 is a deficient number, since it is larger than the sum of its proper divisors (1).

6601100501 is an equidigital number, since it uses as much as digits as its factorization.

6601100501 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 6601100501 is about 81247.1568794872. The cubic root of 6601100501 is about 1875.8817068942.

Adding to 6601100501 its reverse (1050011066), we get a palindrome (7651111567).

The spelling of 6601100501 in words is "six billion, six hundred one million, one hundred thousand, five hundred one".