6501501001 has 2 divisors, whose sum is σ = 6501501002. Its totient is φ = 6501501000.

The previous prime is 6501500983. The next prime is 6501501031. The reversal of 6501501001 is 1001051056.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4170059776 + 2331441225 = 64576^2 + 48285^2 .

It is a cyclic number.

It is not a de Polignac number, because 6501501001 - 2²¹ = 6499403849 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6501501001.

It is not a weakly prime, because it can be changed into another prime (6501501031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3250750500 + 3250750501.

It is an arithmetic number, because the mean of its divisors is an integer number (3250750501).

Almost surely, 2^6501501001 is an apocalyptic number.

It is an amenable number.

6501501001 is a deficient number, since it is larger than the sum of its proper divisors (1).

6501501001 is an equidigital number, since it uses as much as digits as its factorization.

6501501001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 6501501001 is about 80631.8857586749. The cubic root of 6501501001 is about 1866.3992212749.

Adding to 6501501001 its reverse (1001051056), we get a palindrome (7502552057).

The spelling of 6501501001 in words is "six billion, five hundred one million, five hundred one thousand, one".