6505001501 has 4 divisors (see below), whose sum is σ = 6535831104. Its totient is φ = 6474171900.

The previous prime is 6505001497. The next prime is 6505001507. The reversal of 6505001501 is 1051005056.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6505001501 - 2² = 6505001497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6505001507) 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 in 3 ways as a sum of consecutive naturals, for example, 15414485 + ... + 15414906.

It is an arithmetic number, because the mean of its divisors is an integer number (1633957776).

Almost surely, 2^6505001501 is an apocalyptic number.

It is an amenable number.

6505001501 is a deficient number, since it is larger than the sum of its proper divisors (30829603).

6505001501 is a wasteful number, since it uses less digits than its factorization.

6505001501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30829602.

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 6505001501 is about 80653.5895109449. The cubic root of 6505001501 is about 1866.7341264134.

Adding to 6505001501 its reverse (1051005056), we get a palindrome (7556006557).

The spelling of 6505001501 in words is "six billion, five hundred five million, one thousand, five hundred one".