6495553 has 4 divisors (see below), whose sum is σ = 6514308. Its totient is φ = 6476800.

The previous prime is 6495539. The next prime is 6495563. The reversal of 6495553 is 3555946.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3555946 = 2 ⋅1777973.

It can be written as a sum of positive squares in 2 ways, for example, as 2782224 + 3713329 = 1668^2 + 1927^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6495553 is a prime.

It is a Duffinian number.

6495553 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6495563) 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, 8848 + ... + 9553.

It is an arithmetic number, because the mean of its divisors is an integer number (1628577).

Almost surely, 2^6495553 is an apocalyptic number.

It is an amenable number.

6495553 is a deficient number, since it is larger than the sum of its proper divisors (18755).

6495553 is a wasteful number, since it uses less digits than its factorization.

6495553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18754.

The product of its digits is 81000, while the sum is 37.

The square root of 6495553 is about 2548.6374791249. The cubic root of 6495553 is about 186.5829879335.

The spelling of 6495553 in words is "six million, four hundred ninety-five thousand, five hundred fifty-three".