4501643 has 4 divisors (see below), whose sum is σ = 4509288. Its totient is φ = 4494000.

The previous prime is 4501621. The next prime is 4501649. The reversal of 4501643 is 3461054.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4501643 - 2²² = 307339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4501649) 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, 2858 + ... + 4143.

It is an arithmetic number, because the mean of its divisors is an integer number (1127322).

Almost surely, 2^4501643 is an apocalyptic number.

4501643 is a deficient number, since it is larger than the sum of its proper divisors (7645).

4501643 is an equidigital number, since it uses as much as digits as its factorization.

4501643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7644.

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

The square root of 4501643 is about 2121.7075670318. The cubic root of 4501643 is about 165.1164528386.

Adding to 4501643 its reverse (3461054), we get a palindrome (7962697).

The spelling of 4501643 in words is "four million, five hundred one thousand, six hundred forty-three".