3835521 has 12 divisors (see below), whose sum is σ = 5567380. Its totient is φ = 2544480.

The previous prime is 3835519. The next prime is 3835547. The reversal of 3835521 is 1255383.

It can be written as a sum of positive squares in 2 ways, for example, as 1476225 + 2359296 = 1215^2 + 1536^2 .

It is not a de Polignac number, because 3835521 - 2¹ = 3835519 is a prime.

It is a super-2 number, since 2×3835521² = 29422442682882, which contains 22 as substring.

It is a d-powerful number, because it can be written as 3¹¹ + 8⁵ + 3¹³ + 5⁷ + 5⁹ + 2⁵ + 1 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3835501) 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, 1131 + ... + 2991.

Almost surely, 2^3835521 is an apocalyptic number.

It is an amenable number.

3835521 is a deficient number, since it is larger than the sum of its proper divisors (1731859).

3835521 is a wasteful number, since it uses less digits than its factorization.

3835521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2096 (or 2093 counting only the distinct ones).

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

The square root of 3835521 is about 1958.4486207200. The cubic root of 3835521 is about 156.5337976116.

It can be divided in two parts, 3835 and 521, that added together give a square (4356 = 66²).

The spelling of 3835521 in words is "three million, eight hundred thirty-five thousand, five hundred twenty-one".