3521743 has 4 divisors (see below), whose sum is σ = 3603688. Its totient is φ = 3439800.

The previous prime is 3521729. The next prime is 3521747. The reversal of 3521743 is 3471253.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3471253 = 149 ⋅23297.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3521743 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3521747) 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, 40908 + ... + 40993.

It is an arithmetic number, because the mean of its divisors is an integer number (900922).

Almost surely, 2^3521743 is an apocalyptic number.

3521743 is a deficient number, since it is larger than the sum of its proper divisors (81945).

3521743 is an equidigital number, since it uses as much as digits as its factorization.

3521743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81944.

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

The square root of 3521743 is about 1876.6307575013. The cubic root of 3521743 is about 152.1432024166.

Adding to 3521743 its reverse (3471253), we get a palindrome (6992996).

The spelling of 3521743 in words is "three million, five hundred twenty-one thousand, seven hundred forty-three".