6542281 has 4 divisors (see below), whose sum is σ = 6826752. Its totient is φ = 6257812.

The previous prime is 6542279. The next prime is 6542287. The reversal of 6542281 is 1822456.

6542281 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6542281 - 2¹ = 6542279 is a prime.

It is a super-2 number, since 2×6542281² = 85602881365922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6542287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142201 + ... + 142246.

It is an arithmetic number, because the mean of its divisors is an integer number (1706688).

Almost surely, 2^6542281 is an apocalyptic number.

It is an amenable number.

6542281 is a deficient number, since it is larger than the sum of its proper divisors (284471).

6542281 is a wasteful number, since it uses less digits than its factorization.

6542281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284470.

The product of its digits is 3840, while the sum is 28.

The square root of 6542281 is about 2557.7883024207. The cubic root of 6542281 is about 187.0293356705.

The spelling of 6542281 in words is "six million, five hundred forty-two thousand, two hundred eighty-one".