45309223 has 16 divisors (see below), whose sum is σ = 48988800. Its totient is φ = 41816320.

The previous prime is 45309221. The next prime is 45309239. The reversal of 45309223 is 32290354.

It is a cyclic number.

It is not a de Polignac number, because 45309223 - 2¹ = 45309221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45309191 and 45309200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45309221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62658 + ... + 63376.

It is an arithmetic number, because the mean of its divisors is an integer number (3061800).

Almost surely, 2^45309223 is an apocalyptic number.

45309223 is a deficient number, since it is larger than the sum of its proper divisors (3679577).

45309223 is a wasteful number, since it uses less digits than its factorization.

45309223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 45309223 is about 6731.2125950678. The cubic root of 45309223 is about 356.5021922917.

Adding to 45309223 its reverse (32290354), we get a palindrome (77599577).

The spelling of 45309223 in words is "forty-five million, three hundred nine thousand, two hundred twenty-three".