55434444 has 48 divisors (see below), whose sum is σ = 139920480. Its totient is φ = 16980480.

The previous prime is 55434443. The next prime is 55434461. The reversal of 55434444 is 44443455.

It is a happy number.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (55434443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41304 + ... + 42624.

It is an arithmetic number, because the mean of its divisors is an integer number (2915010).

Almost surely, 2^55434444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55434444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69960240).

55434444 is an abundant number, since it is smaller than the sum of its proper divisors (84486036).

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

55434444 is a wasteful number, since it uses less digits than its factorization.

55434444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1610 (or 1608 counting only the distinct ones).

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

The square root of 55434444 is about 7445.4310822141. The cubic root of 55434444 is about 381.2939362068.

Adding to 55434444 its reverse (44443455), we get a palindrome (99877899).

The spelling of 55434444 in words is "fifty-five million, four hundred thirty-four thousand, four hundred forty-four".