6503145 has 24 divisors (see below), whose sum is σ = 11440128. Its totient is φ = 3152160.

The previous prime is 6503143. The next prime is 6503173. The reversal of 6503145 is 5413056.

It is not a de Polignac number, because 6503145 - 2¹ = 6503143 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6503143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24 + ... + 3606.

It is an arithmetic number, because the mean of its divisors is an integer number (476672).

Almost surely, 2^6503145 is an apocalyptic number.

It is an amenable number.

6503145 is a deficient number, since it is larger than the sum of its proper divisors (4936983).

6503145 is a wasteful number, since it uses less digits than its factorization.

6503145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3613 (or 3602 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 6503145 is about 2550.1264674522. The cubic root of 6503145 is about 186.6556523405.

The spelling of 6503145 in words is "six million, five hundred three thousand, one hundred forty-five".