32481 has 10 divisors (see below), whose sum is σ = 48642. Its totient is φ = 21600.

The previous prime is 32479. The next prime is 32491. The reversal of 32481 is 18423.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 32400 + 81 = 180^2 + 9^2 .

It is not a de Polignac number, because 32481 - 2¹ = 32479 is a prime.

It is a super-2 number, since 2×32481² = 2110030722, which contains 22 as substring.

32481 is a lucky number.

It is a plaindrome in base 11.

It is a nialpdrome in base 14.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 32481.

It is not an unprimeable number, because it can be changed into a prime (32401) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 120 + ... + 281.

2³²⁴⁸¹ is an apocalyptic number.

It is an amenable number.

32481 is a deficient number, since it is larger than the sum of its proper divisors (16161).

32481 is an equidigital number, since it uses as much as digits as its factorization.

32481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413 (or 404 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 32481 is about 180.2248595505. The cubic root of 32481 is about 31.9063014317.

It can be divided in two parts, 3248 and 1, that added together give a square (3249 = 57²).

The spelling of 32481 in words is "thirty-two thousand, four hundred eighty-one".