6541957 has 4 divisors (see below), whose sum is σ = 6926796. Its totient is φ = 6157120.

The previous prime is 6541939. The next prime is 6541973. The reversal of 6541957 is 7591456.

6541957 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 3334276 + 3207681 = 1826^2 + 1791^2 .

It is a cyclic number.

It is not a de Polignac number, because 6541957 - 2¹⁵ = 6509189 is a prime.

It is a Duffinian number.

6541957 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6541937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192394 + ... + 192427.

It is an arithmetic number, because the mean of its divisors is an integer number (1731699).

Almost surely, 2^6541957 is an apocalyptic number.

It is an amenable number.

6541957 is a deficient number, since it is larger than the sum of its proper divisors (384839).

6541957 is a wasteful number, since it uses less digits than its factorization.

6541957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384838.

The product of its digits is 37800, while the sum is 37.

The square root of 6541957 is about 2557.7249656677. The cubic root of 6541957 is about 187.0262481386.

The spelling of 6541957 in words is "six million, five hundred forty-one thousand, nine hundred fifty-seven".