3512721 has 8 divisors (see below), whose sum is σ = 4887360. Its totient is φ = 2239952.

The previous prime is 3512699. The next prime is 3512737. The reversal of 3512721 is 1272153.

3512721 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 not a de Polignac number, because 3512721 - 2⁵ = 3512689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3512771) 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, 25386 + ... + 25523.

It is an arithmetic number, because the mean of its divisors is an integer number (610920).

Almost surely, 2^3512721 is an apocalyptic number.

It is an amenable number.

3512721 is a deficient number, since it is larger than the sum of its proper divisors (1374639).

3512721 is a wasteful number, since it uses less digits than its factorization.

3512721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50935.

The product of its digits is 420, while the sum is 21.

The square root of 3512721 is about 1874.2254400152. The cubic root of 3512721 is about 152.0131711809.

Adding to 3512721 its reverse (1272153), we get a palindrome (4784874).

The spelling of 3512721 in words is "three million, five hundred twelve thousand, seven hundred twenty-one".