6542231 has 4 divisors (see below), whose sum is σ = 6547752. Its totient is φ = 6536712.

The previous prime is 6542219. The next prime is 6542243. The reversal of 6542231 is 1322456.

6542231 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 brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (6542219) and next prime (6542243).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6542231 is a prime.

It is a super-2 number, since 2×6542231² = 85601572914722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6542197 and 6542206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6542201) 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, 176 + ... + 3621.

It is an arithmetic number, because the mean of its divisors is an integer number (1636938).

Almost surely, 2^6542231 is an apocalyptic number.

6542231 is a deficient number, since it is larger than the sum of its proper divisors (5521).

6542231 is a wasteful number, since it uses less digits than its factorization.

6542231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5520.

The product of its digits is 1440, while the sum is 23.

The square root of 6542231 is about 2557.7785283327. The cubic root of 6542231 is about 187.0288592062.

Adding to 6542231 its reverse (1322456), we get a palindrome (7864687).

The spelling of 6542231 in words is "six million, five hundred forty-two thousand, two hundred thirty-one".