6495557 has 4 divisors (see below), whose sum is σ = 6501600. Its totient is φ = 6489516.

The previous prime is 6495539. The next prime is 6495563. The reversal of 6495557 is 7555946.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7555946 = 2 ⋅3777973.

It is a cyclic number.

It is not a de Polignac number, because 6495557 - 2¹² = 6491461 is a prime.

It is a d-powerful number, because it can be written as 6⁶ + 4⁹ + 9² + 5⁶ + 5⁶ + 5⁸ + 7⁸ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6495527) 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 in 3 ways as a sum of consecutive naturals, for example, 923 + ... + 3720.

It is an arithmetic number, because the mean of its divisors is an integer number (1625400).

Almost surely, 2^6495557 is an apocalyptic number.

It is an amenable number.

6495557 is a deficient number, since it is larger than the sum of its proper divisors (6043).

6495557 is a wasteful number, since it uses less digits than its factorization.

6495557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6042.

The product of its digits is 189000, while the sum is 41.

The square root of 6495557 is about 2548.6382638578. The cubic root of 6495557 is about 186.5830262332.

The spelling of 6495557 in words is "six million, four hundred ninety-five thousand, five hundred fifty-seven".