3355821 has 12 divisors (see below), whose sum is σ = 5539872. Its totient is φ = 1917576.

The previous prime is 3355819. The next prime is 3355831. The reversal of 3355821 is 1285533.

It is not a de Polignac number, because 3355821 - 2¹ = 3355819 is a prime.

It is a super-2 number, since 2×3355821² = 22523069168082, which contains 22 as substring.

It is a Curzon number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3355811) 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, 26571 + ... + 26696.

It is an arithmetic number, because the mean of its divisors is an integer number (461656).

Almost surely, 2^3355821 is an apocalyptic number.

It is an amenable number.

3355821 is a deficient number, since it is larger than the sum of its proper divisors (2184051).

3355821 is a wasteful number, since it uses less digits than its factorization.

3355821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53280 (or 53277 counting only the distinct ones).

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

The square root of 3355821 is about 1831.8900076151. The cubic root of 3355821 is about 149.7153267494.

The spelling of 3355821 in words is "three million, three hundred fifty-five thousand, eight hundred twenty-one".