6539045 has 4 divisors (see below), whose sum is σ = 7846860. Its totient is φ = 5231232.

The previous prime is 6539041. The next prime is 6539051. The reversal of 6539045 is 5409356.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2669956 + 3869089 = 1634^2 + 1967^2 .

It is a cyclic number.

It is not a de Polignac number, because 6539045 - 2² = 6539041 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6539041) 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, 653900 + ... + 653909.

It is an arithmetic number, because the mean of its divisors is an integer number (1961715).

Almost surely, 2^6539045 is an apocalyptic number.

It is an amenable number.

6539045 is a deficient number, since it is larger than the sum of its proper divisors (1307815).

6539045 is a wasteful number, since it uses less digits than its factorization.

6539045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307814.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 6539045 is about 2557.1556464165. The cubic root of 6539045 is about 186.9984938920.

The spelling of 6539045 in words is "six million, five hundred thirty-nine thousand, forty-five".