45123222 has 16 divisors (see below), whose sum is σ = 90483120. Its totient is φ = 15001632.

The previous prime is 45123191. The next prime is 45123251. The reversal of 45123222 is 22232154.

It is a super-2 number, since 2×45123222² = 4072210327322568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7333 + ... + 12000.

It is an arithmetic number, because the mean of its divisors is an integer number (5655195).

Almost surely, 2^45123222 is an apocalyptic number.

45123222 is an abundant number, since it is smaller than the sum of its proper divisors (45359898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45123222 is a wasteful number, since it uses less digits than its factorization.

45123222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19727.

The product of its digits is 960, while the sum is 21.

The square root of 45123222 is about 6717.3820793520. The cubic root of 45123222 is about 356.0136919785.

Adding to 45123222 its reverse (22232154), we get a palindrome (67355376).

The spelling of 45123222 in words is "forty-five million, one hundred twenty-three thousand, two hundred twenty-two".