6539145 has 16 divisors (see below), whose sum is σ = 10513152. Its totient is φ = 3470720.

The previous prime is 6539129. The next prime is 6539149. The reversal of 6539145 is 5419356.

It is a happy number.

6539145 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6539145 - 2⁴ = 6539129 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6539149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2560 + ... + 4430.

It is an arithmetic number, because the mean of its divisors is an integer number (657072).

Almost surely, 2^6539145 is an apocalyptic number.

It is an amenable number.

6539145 is a deficient number, since it is larger than the sum of its proper divisors (3974007).

6539145 is a wasteful number, since it uses less digits than its factorization.

6539145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2112.

The product of its digits is 16200, while the sum is 33.

The square root of 6539145 is about 2557.1751993166. The cubic root of 6539145 is about 186.9994471277. Note that the first 3 decimals are identical.

The spelling of 6539145 in words is "six million, five hundred thirty-nine thousand, one hundred forty-five".