43551442 has 16 divisors (see below), whose sum is σ = 73193472. Its totient is φ = 19260720.

The previous prime is 43551437. The next prime is 43551457. The reversal of 43551442 is 24415534.

It is a self number, because there is not a number n which added to its sum of digits gives 43551442.

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, 25938 + ... + 27565.

It is an arithmetic number, because the mean of its divisors is an integer number (4574592).

Almost surely, 2^43551442 is an apocalyptic number.

43551442 is a deficient number, since it is larger than the sum of its proper divisors (29642030).

43551442 is a wasteful number, since it uses less digits than its factorization.

43551442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53553.

The product of its digits is 9600, while the sum is 28.

The square root of 43551442 is about 6599.3516348199. The cubic root of 43551442 is about 351.8310623996.

Adding to 43551442 its reverse (24415534), we get a palindrome (67966976).

The spelling of 43551442 in words is "forty-three million, five hundred fifty-one thousand, four hundred forty-two".