33081 has 4 divisors (see below), whose sum is σ = 44112. Its totient is φ = 22052.

The previous prime is 33073. The next prime is 33083. The reversal of 33081 is 18033.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18033 = 3 ⋅6011.

It is a cyclic number.

It is not a de Polignac number, because 33081 - 2³ = 33073 is a prime.

It is a super-2 number, since 2×33081² = 2188705122, which contains 22 as substring.

It is a D-number.

33081 is a modest number, since divided by 81 gives 33 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 33081.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 33081.

It is not an unprimeable number, because it can be changed into a prime (33083) 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, 5511 + ... + 5516.

It is an arithmetic number, because the mean of its divisors is an integer number (11028).

2³³⁰⁸¹ is an apocalyptic number.

It is an amenable number.

33081 is a deficient number, since it is larger than the sum of its proper divisors (11031).

33081 is a wasteful number, since it uses less digits than its factorization.

33081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11030.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 33081 is about 181.8818297687. The cubic root of 33081 is about 32.1015653200.

Adding to 33081 its product of nonzero digits (72), we get a triangular number (33153 = T₂₅₇).

Multiplying 33081 by its product of nonzero digits (72), we get a palindrome (2381832).

The spelling of 33081 in words is "thirty-three thousand, eighty-one".