33481 has 4 divisors (see below), whose sum is σ = 38272. Its totient is φ = 28692.

The previous prime is 33479. The next prime is 33487. The reversal of 33481 is 18433.

33481 = 5² + 6² + ... + 46².

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.

It is a cyclic number.

It is not a de Polignac number, because 33481 - 2¹ = 33479 is a prime.

It is a super-2 number, since 2×33481² = 2241954722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33487) 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, 2385 + ... + 2398.

It is an arithmetic number, because the mean of its divisors is an integer number (9568).

2³³⁴⁸¹ is an apocalyptic number.

It is an amenable number.

33481 is a deficient number, since it is larger than the sum of its proper divisors (4791).

33481 is an equidigital number, since it uses as much as digits as its factorization.

33481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4790.

The product of its digits is 288, while the sum is 19.

The square root of 33481 is about 182.9781407710. The cubic root of 33481 is about 32.2304330157.

The spelling of 33481 in words is "thirty-three thousand, four hundred eighty-one".