45222440 has 16 divisors (see below), whose sum is σ = 101750580. Its totient is φ = 18088960.

The previous prime is 45222433. The next prime is 45222449. The reversal of 45222440 is 4422254.

It can be written as a sum of positive squares in 2 ways, for example, as 44970436 + 252004 = 6706^2 + 502^2 .

It is not an unprimeable number, because it can be changed into a prime (45222449) 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, 565241 + ... + 565320.

Almost surely, 2^45222440 is an apocalyptic number.

45222440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45222440 is an abundant number, since it is smaller than the sum of its proper divisors (56528140).

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

45222440 is a wasteful number, since it uses less digits than its factorization.

45222440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130572 (or 1130568 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 23.

The square root of 45222440 is about 6724.7631928567. The cubic root of 45222440 is about 356.2744380486.

Adding to 45222440 its reverse (4422254), we get a palindrome (49644694).

The spelling of 45222440 in words is "forty-five million, two hundred twenty-two thousand, four hundred forty".