45030321 has 24 divisors (see below), whose sum is σ = 76737024. Its totient is φ = 24900480.

The previous prime is 45030313. The next prime is 45030379. The reversal of 45030321 is 12303054.

It is not a de Polignac number, because 45030321 - 2³ = 45030313 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 45030294 and 45030303.

It is not an unprimeable number, because it can be changed into a prime (45030421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9576 + ... + 13481.

It is an arithmetic number, because the mean of its divisors is an integer number (3197376).

Almost surely, 2^45030321 is an apocalyptic number.

It is an amenable number.

45030321 is a deficient number, since it is larger than the sum of its proper divisors (31706703).

45030321 is a wasteful number, since it uses less digits than its factorization.

45030321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23101 (or 23098 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 45030321 is about 6710.4635458365. The cubic root of 45030321 is about 355.7692003365.

Adding to 45030321 its reverse (12303054), we get a palindrome (57333375).

The spelling of 45030321 in words is "forty-five million, thirty thousand, three hundred twenty-one".