3541021 has 4 divisors (see below), whose sum is σ = 3862944. Its totient is φ = 3219100.

The previous prime is 3541019. The next prime is 3541033. The reversal of 3541021 is 1201453.

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 3541021 - 2¹ = 3541019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3540986 and 3541004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3541051) 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, 160945 + ... + 160966.

It is an arithmetic number, because the mean of its divisors is an integer number (965736).

Almost surely, 2^3541021 is an apocalyptic number.

It is an amenable number.

3541021 is a deficient number, since it is larger than the sum of its proper divisors (321923).

3541021 is a wasteful number, since it uses less digits than its factorization.

3541021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321922.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 3541021 is about 1881.7600803503. The cubic root of 3541021 is about 152.4203077307.

Adding to 3541021 its reverse (1201453), we get a palindrome (4742474).

The spelling of 3541021 in words is "three million, five hundred forty-one thousand, twenty-one".