45630321 has 32 divisors (see below), whose sum is σ = 70225920. Its totient is φ = 26083200.

The previous prime is 45630317. The next prime is 45630337. The reversal of 45630321 is 12303654.

It is a happy number.

It is not a de Polignac number, because 45630321 - 2² = 45630317 is a prime.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 45630291 and 45630300.

It is not an unprimeable number, because it can be changed into a prime (45630301) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59581 + ... + 60341.

It is an arithmetic number, because the mean of its divisors is an integer number (2194560).

Almost surely, 2^45630321 is an apocalyptic number.

It is an amenable number.

45630321 is a deficient number, since it is larger than the sum of its proper divisors (24595599).

45630321 is a wasteful number, since it uses less digits than its factorization.

45630321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 45630321 is about 6755.0219096610. The cubic root of 45630321 is about 357.3423655044.

Adding to 45630321 its reverse (12303654), we get a palindrome (57933975).

The spelling of 45630321 in words is "forty-five million, six hundred thirty thousand, three hundred twenty-one".