55443444 has 48 divisors (see below), whose sum is σ = 155635200. Its totient is φ = 15006816.

The previous prime is 55443433. The next prime is 55443457. The reversal of 55443444 is 44434455.

It is a happy number.

It is a super-2 number, since 2×55443444² = 6147950965162272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15774 + ... + 18965.

It is an arithmetic number, because the mean of its divisors is an integer number (3242400).

Almost surely, 2^55443444 is an apocalyptic number.

It is an amenable number.

55443444 is an abundant number, since it is smaller than the sum of its proper divisors (100191756).

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

55443444 is a wasteful number, since it uses less digits than its factorization.

55443444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34772 (or 34770 counting only the distinct ones).

The product of its digits is 76800, while the sum is 33.

The square root of 55443444 is about 7446.0354551936. The cubic root of 55443444 is about 381.3145699468.

Adding to 55443444 its reverse (44434455), we get a palindrome (99877899).

The spelling of 55443444 in words is "fifty-five million, four hundred forty-three thousand, four hundred forty-four".