8533381 has 4 divisors (see below), whose sum is σ = 8621452. Its totient is φ = 8445312.

The previous prime is 8533363. The next prime is 8533387. The reversal of 8533381 is 1833358.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1833358 = 2 ⋅916679.

It can be written as a sum of positive squares in 2 ways, for example, as 2056356 + 6477025 = 1434^2 + 2545^2 .

It is a cyclic number.

It is not a de Polignac number, because 8533381 - 2¹¹ = 8531333 is a prime.

It is a super-2 number, since 2×8533381² = 145637182582322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8533387) 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, 43890 + ... + 44083.

It is an arithmetic number, because the mean of its divisors is an integer number (2155363).

Almost surely, 2^8533381 is an apocalyptic number.

It is an amenable number.

8533381 is a deficient number, since it is larger than the sum of its proper divisors (88071).

8533381 is an equidigital number, since it uses as much as digits as its factorization.

8533381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88070.

The product of its digits is 8640, while the sum is 31.

The square root of 8533381 is about 2921.1951321334. The cubic root of 8533381 is about 204.3495624648.

The spelling of 8533381 in words is "eight million, five hundred thirty-three thousand, three hundred eighty-one".