6540159 has 8 divisors (see below), whose sum is σ = 8747440. Its totient is φ = 4346496.

The previous prime is 6540139. The next prime is 6540169. The reversal of 6540159 is 9510456.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6540159 - 2⁹ = 6539647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6540139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2224 + ... + 4245.

It is an arithmetic number, because the mean of its divisors is an integer number (1093430).

Almost surely, 2^6540159 is an apocalyptic number.

6540159 is a deficient number, since it is larger than the sum of its proper divisors (2207281).

6540159 is a wasteful number, since it uses less digits than its factorization.

6540159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6809.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 6540159 is about 2557.3734572799. The cubic root of 6540159 is about 187.0091123892.

The spelling of 6540159 in words is "six million, five hundred forty thousand, one hundred fifty-nine".