3572921 has 4 divisors (see below), whose sum is σ = 3897744. Its totient is φ = 3248100.

The previous prime is 3572917. The next prime is 3572923. The reversal of 3572921 is 1292753.

3572921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3572921 - 2² = 3572917 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3572923) 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 3 ways as a sum of consecutive naturals, for example, 162395 + ... + 162416.

It is an arithmetic number, because the mean of its divisors is an integer number (974436).

Almost surely, 2^3572921 is an apocalyptic number.

It is an amenable number.

3572921 is a deficient number, since it is larger than the sum of its proper divisors (324823).

3572921 is a wasteful number, since it uses less digits than its factorization.

3572921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324822.

The product of its digits is 3780, while the sum is 29.

The square root of 3572921 is about 1890.2171832887. The cubic root of 3572921 is about 152.8766431332.

The spelling of 3572921 in words is "three million, five hundred seventy-two thousand, nine hundred twenty-one".