45490 has 8 divisors (see below), whose sum is σ = 81900. Its totient is φ = 18192.

The previous prime is 45481. The next prime is 45491. The reversal of 45490 is 9454.

45490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 45369 + 121 = 213^2 + 11^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an alternating number because its digits alternate between even and odd.

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (45491) 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, 2265 + ... + 2284.

2⁴⁵⁴⁹⁰ is an apocalyptic number.

45490 is a deficient number, since it is larger than the sum of its proper divisors (36410).

45490 is a wasteful number, since it uses less digits than its factorization.

45490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4556.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 45490 is about 213.2838484274. The cubic root of 45490 is about 35.6975693198.

It can be divided in two parts, 45 and 490, that added together give a palindrome (535).

The spelling of 45490 in words is "forty-five thousand, four hundred ninety".