45481 has 2 divisors, whose sum is σ = 45482. Its totient is φ = 45480.

The previous prime is 45439. The next prime is 45491. The reversal of 45481 is 18454.

45481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25600 + 19881 = 160^2 + 141^2 .

It is a cyclic number.

It is not a de Polignac number, because 45481 - 2¹⁵ = 12713 is a prime.

It is a super-2 number, since 2×45481² = 4137042722, which contains 22 as substring.

It is a Chen prime.

It is a nialpdrome in base 15.

It is not a weakly prime, because it can be changed into another prime (45491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22740 + 22741.

It is an arithmetic number, because the mean of its divisors is an integer number (22741).

2⁴⁵⁴⁸¹ is an apocalyptic number.

It is an amenable number.

45481 is a deficient number, since it is larger than the sum of its proper divisors (1).

45481 is an equidigital number, since it uses as much as digits as its factorization.

45481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 640, while the sum is 22.

The square root of 45481 is about 213.2627487397. The cubic root of 45481 is about 35.6952149612.

It can be divided in two parts, 454 and 81, that added together give a palindrome (535).

The spelling of 45481 in words is "forty-five thousand, four hundred eighty-one".