3721543 has 8 divisors (see below), whose sum is σ = 4325760. Its totient is φ = 3135480.

The previous prime is 3721537. The next prime is 3721559. The reversal of 3721543 is 3451273.

3721543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3721543 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3721583) 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 in 7 ways as a sum of consecutive naturals, for example, 4093 + ... + 4918.

It is an arithmetic number, because the mean of its divisors is an integer number (540720).

Almost surely, 2^3721543 is an apocalyptic number.

3721543 is a deficient number, since it is larger than the sum of its proper divisors (604217).

3721543 is an equidigital number, since it uses as much as digits as its factorization.

3721543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9077.

The product of its digits is 2520, while the sum is 25.

The square root of 3721543 is about 1929.1301148445. The cubic root of 3721543 is about 154.9676380582.

The spelling of 3721543 in words is "three million, seven hundred twenty-one thousand, five hundred forty-three".