3522021 has 8 divisors (see below), whose sum is σ = 4858080. Its totient is φ = 2266992.

The previous prime is 3522019. The next prime is 3522053. The reversal of 3522021 is 1202253.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3522021 - 2¹ = 3522019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3522061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20155 + ... + 20328.

It is an arithmetic number, because the mean of its divisors is an integer number (607260).

Almost surely, 2^3522021 is an apocalyptic number.

It is an amenable number.

3522021 is a deficient number, since it is larger than the sum of its proper divisors (1336059).

3522021 is a wasteful number, since it uses less digits than its factorization.

3522021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40515.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 3522021 is about 1876.7048249525. The cubic root of 3522021 is about 152.1472056141.

Adding to 3522021 its reverse (1202253), we get a palindrome (4724274).

The spelling of 3522021 in words is "three million, five hundred twenty-two thousand, twenty-one".