3546021 has 4 divisors (see below), whose sum is σ = 4728032. Its totient is φ = 2364012.

The previous prime is 3546019. The next prime is 3546031. The reversal of 3546021 is 1206453.

It is a happy number.

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 not a de Polignac number, because 3546021 - 2¹ = 3546019 is a prime.

It is a D-number.

It is a Duffinian number.

3546021 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3546001) 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, 591001 + ... + 591006.

It is an arithmetic number, because the mean of its divisors is an integer number (1182008).

Almost surely, 2^3546021 is an apocalyptic number.

It is an amenable number.

3546021 is a deficient number, since it is larger than the sum of its proper divisors (1182011).

3546021 is a wasteful number, since it uses less digits than its factorization.

3546021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1182010.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 3546021 is about 1883.0881551324. The cubic root of 3546021 is about 152.4920142732.

It can be divided in two parts, 35 and 46021, that added together give a triangular number (46056 = T₃₀₃).

The spelling of 3546021 in words is "three million, five hundred forty-six thousand, twenty-one".