6542857 has 2 divisors, whose sum is σ = 6542858. Its totient is φ = 6542856.

The previous prime is 6542843. The next prime is 6542867. The reversal of 6542857 is 7582456.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3370896 + 3171961 = 1836^2 + 1781^2 .

It is a cyclic number.

It is not a de Polignac number, because 6542857 - 2¹⁹ = 6018569 is a prime.

It is a d-powerful number, because it can be written as 6 + 5⁶ + 4 + 2²² + 8⁶ + 5⁹ + 7⁶ .

It is not a weakly prime, because it can be changed into another prime (6542827) 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 as a sum of consecutive naturals, namely, 3271428 + 3271429.

It is an arithmetic number, because the mean of its divisors is an integer number (3271429).

Almost surely, 2^6542857 is an apocalyptic number.

It is an amenable number.

6542857 is a deficient number, since it is larger than the sum of its proper divisors (1).

6542857 is an equidigital number, since it uses as much as digits as its factorization.

6542857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 67200, while the sum is 37.

The square root of 6542857 is about 2557.9008972202. The cubic root of 6542857 is about 187.0348243646.

The spelling of 6542857 in words is "six million, five hundred forty-two thousand, eight hundred fifty-seven".