45222220 has 12 divisors (see below), whose sum is σ = 94966704. Its totient is φ = 18088880.

The previous prime is 45222187. The next prime is 45222239. The reversal of 45222220 is 2222254.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1130536 + ... + 1130575.

It is an arithmetic number, because the mean of its divisors is an integer number (7913892).

Almost surely, 2^45222220 is an apocalyptic number.

It is an amenable number.

45222220 is an abundant number, since it is smaller than the sum of its proper divisors (49744484).

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

45222220 is a wasteful number, since it uses less digits than its factorization.

45222220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2261120 (or 2261118 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 45222220 is about 6724.7468353835. The cubic root of 45222220 is about 356.2738603081.

Adding to 45222220 its reverse (2222254), we get a palindrome (47444474).

The spelling of 45222220 in words is "forty-five million, two hundred twenty-two thousand, two hundred twenty".