6501001 has 8 divisors (see below), whose sum is σ = 7172424. Its totient is φ = 5854080.

The previous prime is 6500981. The next prime is 6501007. The reversal of 6501001 is 1001056.

It can be written as a sum of positive squares in 4 ways, for example, as 3600 + 6497401 = 60^2 + 2549^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6501001 - 2⁵ = 6500969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6501007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5566 + ... + 6631.

It is an arithmetic number, because the mean of its divisors is an integer number (896553).

Almost surely, 2^6501001 is an apocalyptic number.

It is an amenable number.

6501001 is a deficient number, since it is larger than the sum of its proper divisors (671423).

6501001 is a wasteful number, since it uses less digits than its factorization.

6501001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12251.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 6501001 is about 2549.7060614902. The cubic root of 6501001 is about 186.6351374611.

Adding to 6501001 its reverse (1001056), we get a palindrome (7502057).

Subtracting from 6501001 its reverse (1001056), we obtain a palindrome (5499945).

The spelling of 6501001 in words is "six million, five hundred one thousand, one".