45222442 has 4 divisors (see below), whose sum is σ = 67833666. Its totient is φ = 22611220.

The previous prime is 45222433. The next prime is 45222449. The reversal of 45222442 is 24422254.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24422254 = 2 ⋅12211127.

It can be written as a sum of positive squares in only one way, i.e., 36108081 + 9114361 = 6009^2 + 3019^2 .

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 as a sum of consecutive naturals, namely, 11305609 + ... + 11305612.

Almost surely, 2^45222442 is an apocalyptic number.

45222442 is a deficient number, since it is larger than the sum of its proper divisors (22611224).

45222442 is a wasteful number, since it uses less digits than its factorization.

45222442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22611223.

The product of its digits is 5120, while the sum is 25.

The square root of 45222442 is about 6724.7633415608. The cubic root of 45222442 is about 356.2744433008.

Adding to 45222442 its reverse (24422254), we get a palindrome (69644696).

The spelling of 45222442 in words is "forty-five million, two hundred twenty-two thousand, four hundred forty-two".