4531643 has 2 divisors, whose sum is σ = 4531644. Its totient is φ = 4531642.

The previous prime is 4531619. The next prime is 4531651. The reversal of 4531643 is 3461354.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4531643 - 2¹² = 4527547 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4531603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2265821 + 2265822.

It is an arithmetic number, because the mean of its divisors is an integer number (2265822).

Almost surely, 2^4531643 is an apocalyptic number.

4531643 is a deficient number, since it is larger than the sum of its proper divisors (1).

4531643 is an equidigital number, since it uses as much as digits as its factorization.

4531643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 26.

The square root of 4531643 is about 2128.7656047578. The cubic root of 4531643 is about 165.4824325782.

Adding to 4531643 its reverse (3461354), we get a palindrome (7992997).

The spelling of 4531643 in words is "four million, five hundred thirty-one thousand, six hundred forty-three".