3535821 has 12 divisors (see below), whose sum is σ = 5148000. Its totient is φ = 2338440.

The previous prime is 3535817. The next prime is 3535841. The reversal of 3535821 is 1285353.

It is not a de Polignac number, because 3535821 - 2² = 3535817 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3535841) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 321 + ... + 2678.

It is an arithmetic number, because the mean of its divisors is an integer number (429000).

Almost surely, 2^3535821 is an apocalyptic number.

It is an amenable number.

3535821 is a deficient number, since it is larger than the sum of its proper divisors (1612179).

3535821 is a wasteful number, since it uses less digits than its factorization.

3535821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3136 (or 3133 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 3535821 is about 1880.3778875535. The cubic root of 3535821 is about 152.3456612857.

It can be divided in two parts, 3535 and 821, that added together give a square (4356 = 66²).

The spelling of 3535821 in words is "three million, five hundred thirty-five thousand, eight hundred twenty-one".