3821533 has 4 divisors (see below), whose sum is σ = 3953340. Its totient is φ = 3689728.

The previous prime is 3821513. The next prime is 3821563. The reversal of 3821533 is 3351283.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3351283 = 13 ⋅257791.

It can be written as a sum of positive squares in 2 ways, for example, as 2683044 + 1138489 = 1638^2 + 1067^2 .

It is a de Polignac number, because none of the positive numbers 2^k-3821533 is a prime.

It is a super-2 number, since 2×3821533² = 29208228940178, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3821498 and 3821507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3821513) 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, 65860 + ... + 65917.

It is an arithmetic number, because the mean of its divisors is an integer number (988335).

Almost surely, 2^3821533 is an apocalyptic number.

It is an amenable number.

3821533 is a deficient number, since it is larger than the sum of its proper divisors (131807).

3821533 is a wasteful number, since it uses less digits than its factorization.

3821533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131806.

The product of its digits is 2160, while the sum is 25.

The square root of 3821533 is about 1954.8741647482. The cubic root of 3821533 is about 156.3432748676.

The spelling of 3821533 in words is "three million, eight hundred twenty-one thousand, five hundred thirty-three".