3524721 has 8 divisors (see below), whose sum is σ = 4708320. Its totient is φ = 2345472.

The previous prime is 3524713. The next prime is 3524737. The reversal of 3524721 is 1274253.

3524721 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 not a de Polignac number, because 3524721 - 2³ = 3524713 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 3524691 and 3524700.

It is not an unprimeable number, because it can be changed into a prime (3524701) 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, 2481 + ... + 3633.

It is an arithmetic number, because the mean of its divisors is an integer number (588540).

Almost surely, 2^3524721 is an apocalyptic number.

It is an amenable number.

3524721 is a deficient number, since it is larger than the sum of its proper divisors (1183599).

3524721 is a wasteful number, since it uses less digits than its factorization.

3524721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2175.

The product of its digits is 1680, while the sum is 24.

The square root of 3524721 is about 1877.4240330836. The cubic root of 3524721 is about 152.1860746352.

Adding to 3524721 its reverse (1274253), we get a palindrome (4798974).

The spelling of 3524721 in words is "three million, five hundred twenty-four thousand, seven hundred twenty-one".