6505001 has 4 divisors (see below), whose sum is σ = 6510852. Its totient is φ = 6499152.

The previous prime is 6504983. The next prime is 6505003. The reversal of 6505001 is 1005056.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 6255001 + 250000 = 2501^2 + 500^2 .

It is a cyclic number.

It is not a de Polignac number, because 6505001 - 2¹⁰ = 6503977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6505003) 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, 686 + ... + 3671.

It is an arithmetic number, because the mean of its divisors is an integer number (1627713).

Almost surely, 2^6505001 is an apocalyptic number.

It is an amenable number.

6505001 is a deficient number, since it is larger than the sum of its proper divisors (5851).

6505001 is a wasteful number, since it uses less digits than its factorization.

6505001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5850.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 6505001 is about 2550.4903450121. The cubic root of 6505001 is about 186.6734078490.

Subtracting from 6505001 its reverse (1005056), we obtain a palindrome (5499945).

The spelling of 6505001 in words is "six million, five hundred five thousand, one".