45221224 has 16 divisors (see below), whose sum is σ = 89777700. Its totient is φ = 21280512.

The previous prime is 45221213. The next prime is 45221227. The reversal of 45221224 is 42212254.

It can be written as a sum of positive squares in 2 ways, for example, as 44756100 + 465124 = 6690^2 + 682^2 .

It is a junction number, because it is equal to n+sod(n) for n = 45221195 and 45221204.

It is not an unprimeable number, because it can be changed into a prime (45221227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166119 + ... + 166390.

Almost surely, 2^45221224 is an apocalyptic number.

It is an amenable number.

45221224 is a deficient number, since it is larger than the sum of its proper divisors (44556476).

45221224 is a wasteful number, since it uses less digits than its factorization.

45221224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332532 (or 332528 counting only the distinct ones).

The product of its digits is 1280, while the sum is 22.

The square root of 45221224 is about 6724.6727801433. The cubic root of 45221224 is about 356.2712446959.

Adding to 45221224 its reverse (42212254), we get a palindrome (87433478).

The spelling of 45221224 in words is "forty-five million, two hundred twenty-one thousand, two hundred twenty-four".