45453221 has 8 divisors (see below), whose sum is σ = 51741504. Its totient is φ = 39524320.

The previous prime is 45453211. The next prime is 45453229. The reversal of 45453221 is 12235454.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-45453221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45453229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89576 + ... + 90081.

It is an arithmetic number, because the mean of its divisors is an integer number (6467688).

Almost surely, 2^45453221 is an apocalyptic number.

It is an amenable number.

45453221 is a deficient number, since it is larger than the sum of its proper divisors (6288283).

45453221 is a wasteful number, since it uses less digits than its factorization.

45453221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179691.

The product of its digits is 4800, while the sum is 26.

The square root of 45453221 is about 6741.9003997389. The cubic root of 45453221 is about 356.8794614332.

Adding to 45453221 its reverse (12235454), we get a palindrome (57688675).

The spelling of 45453221 in words is "forty-five million, four hundred fifty-three thousand, two hundred twenty-one".