45489321 has 6 divisors (see below), whose sum is σ = 65706810. Its totient is φ = 30326208.

The previous prime is 45489281. The next prime is 45489329. The reversal of 45489321 is 12398454.

45489321 is a `hidden beast` number, since 4 + 548 + 93 + 21 = 666.

45489321 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 only one way, i.e., 43560000 + 1929321 = 6600^2 + 1389^2 .

It is not a de Polignac number, because 45489321 - 2¹⁵ = 45456553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45489329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2527176 + ... + 2527193.

It is an arithmetic number, because the mean of its divisors is an integer number (10951135).

Almost surely, 2^45489321 is an apocalyptic number.

It is an amenable number.

45489321 is a deficient number, since it is larger than the sum of its proper divisors (20217489).

45489321 is a wasteful number, since it uses less digits than its factorization.

45489321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5054375 (or 5054372 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 45489321 is about 6744.5771550187. The cubic root of 45489321 is about 356.9739170737.

The spelling of 45489321 in words is "forty-five million, four hundred eighty-nine thousand, three hundred twenty-one".